Umio's appearance is that of a blue fish with a yellow fins and a humanoid face.
Umio has a serious, polite and task oriented personality. He is often calm, talking formally like a gentleman. He often goes out to do various scouting missions and takes a leadership role among Uzume's monster allies. He keeps Uzume on task when she shifts to her daydream personality. He is similar to Histoire as he pushes the group to get the job done.
Zero Dimension Neptunia Z: Twilight of the Desperate CPU
Umio calls Uzume on the first day of the Planeptune sister's adventures in the Zero Dimension reporting on the status of the evacuation of the monster allies of Uzume.
On the next day, he investigates rumors about the sighting of share crystals. He confirms the appearance of them and is suddenly attacked. He lures the monsters away from the other Baby Bug and Dogoo monsters.
Eventually he is rescued by the girls and thanks them. He tries to get them away but a strong monster arrives. The girls defeat that monster and the group return to base with the share crystal he found.
Nepgear prepares a meal for them all but it mostly consists of fish which is what Umio does not like as he finds that to be cannibalism. He tries to get Uzume to try shiitake mushroom which she does not like. After the meal he suggests that Neptune is likely from another dimension instead of continent. He also looks at Nepgear's findings about the history of the world and he thinks that something else is behind the Dark CPUs. He then explains to the sisters that Uzume's true personality is the one she has in her daydreams. However, the state of the world caused her to desire to be cool as she associates cool with reliability. After all that he wishes the girls good night and the group rests for the day.
The next day, Neptune started complaining about the lack pudding. Nepgear apologizes on her sister's behalf and Umio comments that it is difficult to see who is the older sister. Uzume is interested in pudding and starts fantasizing about it. After that, Neptune and Uzume go out to look for some ingredients. They manage to find some. Uzume and Nepgear prepare the pudding while Umio and Neptune decides to invite their monster friends for a pudding party.
After that, Umio explains the plan to defeat Dark Purple. The Dark CPUs are weak to share energy but due to their size cannot truly be harmed when hit with share energy. The plan is to surround Dark Purple with share energy but they need to get a lot of share crystals for that. Luckily, Umio knows of a location with lots of crystals and the group heads over there.
Near the location of the crystals, the scenery is quite beautiful. Umio says that is the case due to the share crystals. Since Uzume uses share crystals to transform and is unable to use faith for share energy, places like these will disappear. Umio suggests that it is because this world likely did not accept Uzume as its CPU yet. He then dubs this dimension the "Zero Dimension" as it is truly on its last legs. Uzume says she will fight on regardless. Neptune decides to lighten the mood suggesting this place is perfect for a picnic with pudding.
A Dogoo named "Goobs" then shows up with his group of Dogoos to assist in finding the share crystal. His group finds the crystal first and report to Uzume. Nepgear comments that it is lucky that Uzume can use share crystals to transform and wishes she could do the same. Uzume wonders if they grind the share crystal in powder and add it to pudding. Umio asks if she would like to transform side by side with the Planeptune sisters. Uzume does and starts to have a daydream about that.
When they finally find it, Arfoire and summons Dark Purple to attack them. In addition to that, she destroys the share crystal and finally introduces herself. Uzume tries to lure the Dark CPU away but Neptune would have any of that as they are friends. Moved by the display of courage the Dogoos give their faith to the girls. The girls are able to transform, trap Dark Purple in the sharing field and destroy. They force Arfoire to flee and the group returns to base happy.
Uzume goes to take a shower so Umio explains to the Planeptune sisters Uzume's ability. She can turn her dreams into reality. The limitation is that she must truly wish for it and thanks to the sisters, for giving Uzume the right mindset to change the world so that CPUs can harness share energy from monsters. Neptune catches that he was actually trying to make that happen by nudging Uzume on with the thought of all three of them transforming. With that they truly have a shot at restoring the Zero Dimension back to its glory days.
A few days have passed and Umio decides to ask Nepgear to follow him somewhere. Neptune teases her sister about suitors looking for Nepgear. Umio denies but teases Nepgear if she wanted that to be the case. After the teasing Uzume and Neptune and Nepgear follow Umio to a transport facility.
It is in good condition and Nepgear connects her N-Gear into a terminal to start analysing the place. She finds out that the transport terminal is only good for inter-city travel not inter-dimensional travel. Nepgear’s N-Gear rings and it is Histoire. She is glad to be able to contact the Planeptune sisters who introduce her to Umio and Uzume.
She thanks the two for helping the sisters and apologizes for any problems they may have caused. Umio and Histoire then start to chat leading Neptune and Uzume to comment on the “parent-ness” of the conversation. Umio then remarks that Uzume is her daughter which Uzume takes literally. He clarifies that it is a metaphor. Histoire then mentions that the sisters can return to Planeptune using the N-Gear, shares and the transfer terminal. Histoire tries to perform the transfer but it fails.
Nepgear figures out that the transfer terminal is broken so she decides to try to repair it. She will call Histoire when the repairs are done. Several hours later, the terminal is missing two crucial components. An important part is corroded and needs to be replaced and they lack power.
The group decides to look around in the city for a replacement part. Having no luck and seeing Nepgear become unhappy the group decides to take her to the best arcade Umio knows in the city. Unfortunately most of the arcade is broken so a Baby Bug named Fried Shrimp leads them another one out of town.
In the next town, the arcade is infested with ferocious monsters. A Hell’s Crest asks the girls to take care of the monsters and in turn they will get to play the best arcade games. The girls take care of the monsters and play a few arcade games. Nepgear looks a lot happier so the plan was a success.
A security robot attacks the girl. They defeat it and after Nepgear dissects it, finds the replacement part for their transfer terminal. With that, the group is one step closer in sending the sisters back to Planeptune.
Nepgear contacts Histoire as the terminal is repaired. Neptune expresses her desire to stay due to not wanting to have Histoire lecture her. Histoire suggests that Neptune can stay and Nepgear can go back home and take her place as CPU. Neptune apologizes. Uzume then offers a share crystal to act as the power supply for the terminal as thanks for everything. Neptune wonders if such an important item can be used. Umio and Uzume that it can be used as this is an important enough event.
Nepgear actually wants to stay to help Uzume so that once everything is done, Uzume can return to Planeptune with the sisters. Uzume refuses and tries to explain her reasons. However, Arfoire launches an attack at the facility. Neptune expresses her annoyance at Arfoire and jokes about her enraging the villain.
Arfoire unleashes her monster horde at them. The monsters start to overwhelm the girls. Umio suggests to Uzume that they should fall back. It is their victory if the sisters return home safely. Uzume orders the girls back so that she can send them home. Arfoire quickly reaches the transport room and attacks Uzume so Nepgear leaves the terminal to defend her.
The terminal has been destroyed and Uzume is furious with Nepgear. She intends to scold her but the two must cut their way through the monsters. Out in the open, Uzume gives Nepgear a piece of her mind. Nepgear explains herself and Uzume feels guilty and wants to fight her way back to the terminal. Umio says that they should move on and try to figure out an alternative method to go home. Additionally they need to regroup and plan to eliminate an intelligent enemy like Arfoire. It is not the same as Dark Purple who was a rampaging mindless beast. First, they need to retreat to their main base. Uzume agrees to this.
Nepgear wonders what their main base is, so Uzume explains that her base was only used to fight Dark Purple. They actually have a main base. Umio leads them into a cave infested with monsters but it is a shortcut and not on the map, so Arfoire cannot track them down. He trusts them in handling the monsters. In the cave Nepgear notices her N-Gear not working. Uzume suggests hitting it. Instead, she wonders if she can just upgrade Uzume's Visual Radio and use that as a replacement. She asks Uzume to think about what she wants for her upgraded Visual Radio. Umio is glad that the girls are not depressed with the lost terminal. The group continues on in the cave.
They reach a dead end so Umio suggests taking another path. However, Arfoire ambushes them blocking the way. Umio wonders how this is possible as this cave is not on a map. Arfoire says she just followed the group as they did not cover their tracks. Umio apologizes to the girls. Regardless, the girls ready themselves for a fight. They gain the upper hand against Arfoire so she transforms to a beast like form. The form proves too much for the girls.
Nepgear then hears a familiar voice. She thinks it comes from her sister and older Neptune crashes in. She introduces herself as a dimension traveling bug catcher. She was trying to catch a skyfish before she crashed down. She declares herself an ally of cute girls and finds Umio's appearance absolutely hilarious. Umio is left confused about this Neptune. She continues her small talk with Nepgear and Uzume much to Arfoire's annoyance. Neptune then heals up the party to fight Arfoire.
The girls come out victorious so Neptune seals the oversized Arfoire in her book. Neptune is invited to join the party and they head off into the main base. After a meal, Umio learns that this Neptune is from another dimension. Since she can travel dimensions, Umio is glad that Nepgear has found an alternate method to return home. However, Neptune says they need to find Crostie first as she was the one with the power to travel dimensions. The group then rest for the night as tomorrow, they must search for Crostie.
The next day Uzume prepares a nice breakfast of eggplants that Nepgear picked up and fish that she fished up. Nepgear compliments her on her culinary skills. However Neptune learns that she hates eggplants. Umio notes that Neptune is grown up and must be able to try the food. The group is unable to convince Neptune to try it.
Next, the group attempts to interrogate Arfoire. All they can learn from her is that she wants to kill the CPUs then destroy the world. They are unable to learn why though.
Later Neptune asks what is for lunch. It is the same as the breakfast. Umio again reminds Neptune of her age and how she must try to get used to eggplants. Neptune refuses and flees. Umio then decides to check the ingredients for lunch. He discovers that there is some fresh fish. He assumes Uzume must have slipped some in. Umio then hears a voice. The voices tells him that he cannot waste food. However, if he gives the fish to Arfoire, he will not waste food and avoid the fish. He finds this a good idea and gives the fish to Arfoire.
Arfoire then escapes and thanks Umio, Neptune and Uzume for feeding her so that she can free herself. Umio is angry at being tricked and wished he had endured eating the fresh fish. Arfoire then escapes. The food hating trio then agree that they should never try to eat foods they hate so that this will never happen again. Nepgear wonders if there is any chance they can get used to the food they hate. They unanimously say no.
Using a stick that Neptune picked up and dropped, the group goes in that direction of the stick to find Arfoire. Eventually, Nepgear comes by a terminal where she finds more of the world's history. Nepgear shows this information to Umio. Umio says that it seems with all the information acquired that the destruction of this world was caused by one person. This person had no control over their power and was driven insane by it. It can be Arfoire that was this person but Umio admits it is just conjecture. Uzume shows and says she will take down Arfoire no matter what for this world.
As the party continues, Nepgear and Uzume detect share energy. There must be a share crystal nearby. Umio explains to Neptune that it is a power-up item for CPUs. The group heads over the share energy. They find Arfoire and Crostie. Crostie asks Neptune to join them as they destroy the world. Umio asks if that means Crostie is not their ally. She confirms this, clarifies her name as Croire and mentioned the fact that she gathered the share crystal to use as bait.
Arfoire then transforms to her True Deity of Sin form. Nepgear explains that the previous battle was against her first Deity of Sin form. This form is her strongest form and their chances of winning are low. The girls fight the form and manage to win. Arfoire asks Croire the power of the CPU from another dimension.
Nepgear tells Uzume and Neptune to stop this but they fail to. With the power, Arfoire revives Dark Purple. Uzume asks Umio for more share crystals to fight Arfoire. Umio says they are too low on it. They may enough for just her to transform but that is it. Uzume then decides to take the share crystal Arfoire lured them with but gets mortally wounded when she tries.
She orders Dark Purple to destroy the area around them. The group carries Uzume and flees. They return to the base and Nepgear performs emergency treatment on Uzume. She leaves Uzume to the care of Umio and the monsters as she must find more ingredients for more medicine. Later, Nepgear returns and is anxious about trying to treat Uzume. Umio gives her some words of encouragement and she begins her treatment.
Meanwhile, Umio leaves to do some preparations of his own as Arfoire fused with Dark Purple and is approaching the main base in a day. During the one day the monsters allies of Uzume and Umio searched the lands of Zero Dimension for as many share crystals as possible.
Umio reappears in the ruins where Uzume is trying to trap Arfoire in a sharing crystal. Since Arfoire can nullify share energy, he decides to lend his aid to Uzume. He says he will not let Uzume fight alone and lends her the power of the share crystal and his faith. The monster he led to find other share crystal yesterday do the same. It was not enough to completely stop Arfoire. Histoire and the small Neptune lends Planeptune's shares to the cause. With all that Uzume is able to enclose Arfoire in a sharing field.
The small Neptune then arrives and the girls fight Arfoire one last time. They defeat her causing her Dark Purple body to collapse and Uzume is about to deactivate the sharing field but the small Neptune stops her as they need it to go home. Umio understands that the portal that they need to go home uses shares as a medium. Umio and Uzume then say their goodbyes to the Planeptune sisters and Neptune and Croire. The sharing field then deactivates with Uzume and Umio resting.
Umio says Uzume really pushed herself this time. She did as it took all the share energy she had, the share energy from Planeptune and all the monsters. Umio notes that they have a lot of work set out for them but it is a lot safer. The two of them will work together to rebuild the Zero Dimension.
Heart Dimension Neptunia H: Trilogy Finale: Into Legend
Umio spots Nepgear with a group of people in the Zero Dimension. He decides to search for Uzume to tell her the good news. He makes a reapperance in Uzume's base as Nepgear's rescue mission and Uzume discuss the fact that there is likely a fake Uzume. The fake has kidnapped the CPUs with the help of the Dark CPU. Umio confirms the sightings of the Dark CPU heading northeast. Umio and Uzume tell the mission that in the northeast lies the end of Zero Dimension. The two regardless decide to join the mission in order to find the truth about the fake.
They head northeast and Umio tells Nepgear when they have reached the end of the Zero Dimension. An earthquake starts and after it ends, Uzume checks the dimensional co-ordinates. It has changed. Nepgear checks the co-ordinates of the Hyper Dimension, Zero Dimension's previous and current co-ordinates and notices that the Zero Dimension seems to be heading towards the Hyper Dimension. Uzume wants to know what happens if the two dimensions meet.
The fake arrives with big Neptune. Fake Uzume answers with the dimensions will merge resulting in the creation of a dimension like the Zero Dimension. The two then leave and the mission is hot pursuit. The mission ends up in a weird dungeon. Umio comments on the dungeon before continuing the pursuit. The mission corners the two and fake Uzume leaves behind a monster for the group to fight. The two flee using a portal created by big Neptune's Nep-Note.
After defeating the monster, the mission finds the portal still open. They cross it to find a dimension that consists of largely empty space. The mission is able to find a city to serve as their base. Umio, Uzume, Nepgear and Uni decide to investigate the new dimension further while the remaining members rest.
During their scouting, Umio's dorsal fin starts acting up and he senses something foul. Nepgear is shocked by Umio's change so Uzume explains that this occurred right after the Planeptune sisters left. Umio explains that fish are the forefront of evolution so this is his evolution. Nepgear wonders if that means Umio will grow legs and arms like a frog. Umio says he is rather fond of being a fish and hopes not.
The girls follow Umio's lead to find Arfoire attacking older Neptune. Arfoire brags about how Neptune thought she could outsmart Uzume but now she is going to die. Arfoire closes in on the kill but Nepgear, Uni and Uzume transform and prevent her. The three CPUs defeat Arfoire and she wonders why. Umio remarks that Neptune had said that Arfoire is destined to be beaten by them. Arfoire begs for Uzume to save her as she dies. Older Neptune breathes a sigh of relief before collapsing. Umio and the girls take older Neptune back to base.
They decide to awaken her with a potion S-Sha made. It works but Neptune complains about the after its taste. She then wonders if the mission is going to torture her and do things to her that can be shown in a family-friendly game. They tell her know and want to know her story. Neptune confirms that she tried to sabotage the other Uzume whose name is actually Uzume. Older Neptune decides to call the other Uzume, Kurome Ankokuboshi to avoid confusion.
She explains when they first met, finding the Swirl Console and getting transported by it which led to her meeting Nepgear, Uzume and Umio. She then reveals that she knows where the CPUs are and the Heart Dimension is actually someone's soul turned into a dimension. Uzume asks her to lead them there and apologizes for asking her so soon. Neptune agrees and the mission is off.
Older Neptune gives the mission more details, firstly the CPUs are asleep and trapped inside Dark CPUs which are in the center of the Heart Dimension. The Heart Dimension can materialize dreams. Since the CPUs are asleep, their dreams can materialize. In addition, Kurome can mess with the dreams. Older Neptune believes Kurome's goal is to get the CPUs to fall into delusion like the Gold Third. Uni does not believe the CPUs would not fall for nightmares. K-Sha warns her that Kurome does not need to give them nightmares but pleasant dreams that target someone's deepest desire. Kurome is incredibly deceptive.
The mission finally makes it to the center of the Heart Dimension to find the CPUs trapped inside the Dark CPUs. Kurome Ankokuboshi and Croire arrives. Kurome notes that if she had known older Neptune would have lead them here, she would have killed her earlier. The mission demands the return of the CPUs and her reason for messing with the Gold Third. Kurome says the purpose of messing with the Gold Third was entertainment because if they fell into delusion, then the world would be chaotic.
Kurome says that it is time to kill the mission. Uzume asks her how she intends to do that as she has Share Energy. Kurome instead asks Uzume to become one with her as they were originally one person. Uzume gets confused so Kurome decides to return all her memories to Uzume. Uzume struggles to cope with the new memories, so Umio and older Neptune try to help her up.
Kurome says it will take time to process everything so she decides to explain everything. Firstly, CPUs are essentially born from people's wishes. However, for Uzume, her people grew to hate her, they sealed her away then forgot about her. Uzume vowed revenge and just like that, her source of power shifted from Share Energy to Negative Energy generated by negative emotions. Using her delusion power coupled with negative emotions of her people, Uzume deleted all trace of herself from her people.
In turn, the people needed a new CPU, Uranus. Kurome announces that she is a CPU of Planeptune, Uzume Tennouboshi and demands they all kneel to her, increasing the gravity of the place forcing the mission to kneel. Kurome then explains that both the Zero Dimension and Heart Dimension are born from her dream of herself destroying Gamindustri, with the Zero Dimension serving only as an entrance to the Heart Dimension.
This is possible because her power is to turn dreams into reality. This is why Planeptune hated her. Kurome tells the mission that she wanted to break out of the seal, but she could not. However, if her dream created dimensions, she break out of their dimensional boundaries instead of the seal. As she began to attempt this method, a part of Uzume split off from her and tried to stop the Dark CPUs trying to break the boundaries.
But that was good for her, as once Uzume battled the Dark CPU and started to gain Share Energy, she did as well. With the Share Energy, Kurome can observe the Hyper Dimension and appear as a sort of hologram but that was enough. Kurome decided to send Arfoire out to gain even more Share Energy. Kurome then came up with the idea to fuse the dimensions instead breaking out of the boundaries or seal. Nepgear, Umio and Uzume are in shock to learn that their adventures in the Zero Dimension only helped Kurome out.
Kurome says that the Gold Third are also to thank. The Golden Summits, that were created give a rare signal in multidimensional space. Their existence was thanks to the CPU Shift Period lowering the faith in the goddess, good enough for her to write the CPUs out of existence. Gamindustri, however needed protectors and created the Golden Summits. The fused dimensions will allow her to physically materialize the Dark CPUs.
Kurome notes that with her Negative Energy, Uzume's Share Energy, Croire's power that came from another CPU, she can rule Gamindustri forever. She asks Uzume to become one with her again. Uzume angrily refuses.
Kurome says it is a shame and will kill her along with the rest of the mission. Kurome creates clones of Arfoire and explains that this is her dream, creating things from her memory is easy. She admits that this gave her quite a bit of trouble in the past but serves as a perfect pawn. the candidates transform ready to fight to rescue their sisters.
Kurome tells them not to get too excited as the CPUs just fell into delusion and she allows them to awaken. The CPUs announce that they will torture their sisters and friends and transform. The candidates pull back and transform back. Older Neptune wants to escape but Nepgear notes that the CPUs are somewhere in there as her sister did hesitate.
Everyone agrees with Nepgear. The rescue mission begins their battle to return the CPUs to their senses. After the battle, Uzume wonders why the CPUs aren't back yet. They should not be wanting to hurt their sisters or anything else they love. The CPUs begin to regain their senses and apologize for their actions. Kurome forces more Negative Energy to the CPUs.
The CPUs try their best to resist but are in pain. Kurome tells Uzume that she cannot win. Uzume asks for everyone to pray for the CPUs' return to themselves and she will create a Share Crystal for that purpose. Kurome says it is impossible but Uzume tells her not underestimate her illusion power.
Uzume with the faith of the everyone creates the crystal and transforms the CPUs to their Next Form. Kurome wonders what are those forms? Croire can't believe that they can neutralize all the Negative Energy. Kurome tells them to not get carried away and unleashes Dark Green at the party. Uzume activates her Sharing Field with the Share Crystal. The party destroy Dark Green but find Kurome smiling. Kurome says that she will win and asks them to check the dimensional co-ordinates. Nepgear checks and notices the dimension much closer to the Hyper Dimension but she says it has only been a short time.
Kurome explains it is because they are in the Heart Dimension, she can bring the Heart Dimension closer to the Hyper Dimension with no resistance. She notes that the dimension are close enough for her to materialize, at least for a short time. Croire creates a portal as the two begin to leave to the Hyper Dimension. Kurome leaves a bunch of clones of the CPUs for them to fight. She says she created them to influence their dreams but does not need them anymore. The party can dispose of them in however they wish. The two leaves.
Neptune tells Nepgear, the candidates and Gold Third to follow Kurome as the CPUs will deal with the fakes. The candidates and Gold Third take their leave after Uzume hands them a Share Crystal in case Kurome has anymore Dark CPUs. IF and Compa stay behind to help the CPUs.
Heart Dimension route
The fakes have a parody of the CPU's personality, which causes the CPUs to transform back. The two Neptunes wonder if it is some debuff caused by their weird dialogue and movement. Compa asks if IF is going to scold Neptune but IF says that scolding two Neptunes is a waste of calories. Compa wonders if she can make a diet drink out of that. Umio says diets are important but are they ready to fight the fakes. Neptune says she is ready to Umiotaro. They prepare for battle but Umio interrupts her to remind her that his name is Umio. Neptune says oh.
The girls manage to defeat the fakes and Neptune notes that fakes are never a match for the real.Croire returns to congratulate the CPUs and group for defeating some many fakes and asks them what are they planning to do after knowing everything.
Noire says they plan to defeat Kurome. Croire reminds them that if they do then the Heart Dimension and Zero Dimension disappear getting rid of Uzume, Umio and all of Zero Dimension's inhabitants. Older Neptune is not happy with the two choices and Croire asks her if she was paying attention. Their choices boil down to letting Kurome do as she pleases which will screw over the Hyper Dimension or stopping her with the consequences that Croire previous talked about.
Umio wonders why must the world being so cruel to Uzume. Croire says it is just Uzume's punishment as she nearly destroyed the Hyper Dimension. Umio wants to know more so Croire reminds him of the strange reports that Nepgear found in the Zero Dimension. Since they were slow on the uptake, Croire decided to repair the data but they never figured it out that the perpetrator was Uzume herself.
Uzume runs away after hearing this. Croire says that Uzume just ran away. The party leaves to pursue Uzume. Umio and the girls follow Uzume's trail to this Tangram Road. Neptune wonders if this is the right place. Umio assures of this as his dorsal fin is picking up Uzume. Vert is intrigued by the fin and asks Umio if she can feel it.
Umio agrees to it. Vert gets to work and Umio feels nice being touched. He moans and asks Vert to stop. Vert is satisfied with her work and Noire asks the two what they are doing. Umio apologizes and says Vert is like a magician, but corrects himself to say technician. Vert says she lost control hearing a pretty man's moaning.
Deeper within the dungeon, Older Neptune found Uzume. Vert wonders what they can say to her. Umio volunteers to talk to her as he has known her for a long time and is not a CPU so it may be easier for her to be honest.
Uzume hates the fact that she destroyed the Hyper Dimension in the past, earned the world's hatred, must stop herself which will destroy the Zero Dimension she is supposed to protect. All Uzume ever wanted was to grant people's dreams and live in peace. Uzume does not want to think and just die. She begs for someone to save her, she wants Umio. Umio shows up and says that he will follow her anywhere to see her dreams come true and be there with her when it happens. That has been his only wish. He says that Uzume has fallen into a nightmare and they should try to wake from it together.
Uzume calms down and Umio says Uzume is likely the conscience of her sealed self. It split off because the sealed self was infected with delusion and hatred. Umio also says that the group has checked the reports that Nepgear has found. Although there is recorded fact of people hating Uzume, more of it is the concerns of the people for Uzume. Uzume says she was unaware of that fact. Umio says that memories are fleeting and ambiguous. The passage of time can change one's interpretation of memories and it is important not to look at memories with disdain.
Uzume starts to remember the past. Histoire announces that she will be working with a grassroots youth in a publicity campaign. The youth is eager and happy to work with Uzume. The youth asks a few kids ahead to address Uzume politely if she passes by with a cart. The kids do so. A middle aged man wants to live in Planeptune but the youth cannot grant his wish. Another man says that is just how it works. The youth tells Uzume that they should work together to build a wonderful nation.
Another man comments on the recent events of Uzume losing control of her illusion power. The grassroots youth wonders if there is anything they can do to help Uzume. Some youths comment on the failed assassination attempts. They think the nation will collapse if Uzume keeps ruling. The youth expresses his relief that Uzume is still alive. An old woman wonders why the world is so cruel to Uzume as she earnestly tried her best. A young sobbingly asks her grandmother if there is anything to save Uzume.
An assassin finds Uzume and makes his attempt. The youth gets in the way and gets fatally wounded. He tells Uzume that he is glad she is okay that she should not cry. The youth says his wish is to see that Uzume's dreams come true and be there with her when it happens. Afterwards Histoire accepts Uzume's request to be sealed. She promises that she will find a way to seal her illusion power so she can comeback and that they will only part for a short time.
Uzume is glad to have remembered all her memories. Neptune interrupts this moment. Umio wonders what is going on as the mood was very good. Noire claims they were trying to slip an important plot point by. Umio asks if she means Histoire. Vert says it is about the youth. His wish is the same as Umio's. Older Neptune concludes that Umio is the youth. IF says that the youth protected Uzume and lost his life but the emotions and regrets of the two allowed him to reincarnate.
Blanc likes the plot and says she will enter it for next Rookie Novelist competition. Neptune admits that her series is prolific but for actual romance plot to occur is something she was supposed to avoid. Older Neptune says she may have to eat Umio out of the main cast. Neptune says he cannot allow the series to have a game where Umio has a harem to occur. Uzume asks them how they were able to see her flashback.
Older Neptune says the flashback was projected right behind her. Uzume asks them to kill her over embarrassment.
Umio asks Uzume if she is calm. Uzume assures him that she is but not she cannot choose between the Hyper Dimension or the Heart Dimension as she grew to like both of them. Neptune says she has discovered the third option. Neptune says if Negative Energy made the other Uzume evil, who she decides to call Kurome Ankokuboshi to avoid confusion then they could purify her with Share Energy like what they did with Affimojas.
The CPUs agree the plan makes sense but they are concerned with the amount of Negative Energy that needs to be neutralized. The worst case scenario is that their energy is neutralized. Neptune says it is the only way to save both dimensions. Umio asks Uzume for her opinion. She wants to try the plan and will back away from a tough gamble.
Since Uzume is okay with Vert says the CPUs are okay with it. Since the Heart Dimension is literally Uzume's heart, the party sets off to purify the dimension to purify Uzume.
Umio and the party enters DreamPass Area. Umio asks the older Neptune whether they have reached the center of the Heart Dimension. She says they have not and it is deeper. Within the dungeon, Uzume asks Umio if he really is the grassroots youth in her memories. Umio apologizes as he only has memories of his current life with Uzume. Uzume says it does not matter as long as he is with her.
In the depths of this dungeon, they find a giant shattered Share Crystal floating in the distance. Older Neptune explains to her that it is the crystallization of the Share Energy sealed with Uzume's body when she was sealed. Croire arrives to add that it is the reason that there are share crystals in the Zero Dimension. Older Neptune is surprised to see her old friend. Croire greets older Neptune. Umio accepts the explanation as the reason for the party find Share Crystal in so many places. Blanc adds that the crystal is likely the reason why Uzume is still alive despite the world forgetting about her. Uzume considers how it can be used and is plotting something.
Older Neptune tells Croire to stop helping Kurome or else both dimensions will be destroyed. Croire admits that Kurome is a slave driver but she already recorded lots of beginnings and ends of countless worlds. Older Neptune tells her she knows but recording is one thing but helping its destruction is another. Older Neptune cannot allow Croire to be free if this keeps up. Croire asks her if it is instead about her wanting to use her dimension hopping abilities. Older Neptune is shocked that she knows and tries to play that off as untrue. Croire says that she is too obvious and she asks if Neptune was also intentionally sabotaging AffimaX. Older Neptune tries an obvious attempt to feign ignorance. Croire concludes that she has simply been playing the role of the clown the whole time.
Noire says Croire took long enough to figure it out. Neptune may be happy go lucky and spouts nonsensical meta-jokes but she has always been. Neptune cuts her with a scream. Noire and Croire are shocked. Croire tells her to stop yelling as she was not talking to her. Neptune complains her lack of relevance as a protagonist. Umio says Neptune might be falling into a delusion.
Croire wonders what is wrong with the party but she says they will not get in her way in recording history. Croire summons Dark White. Uzume says Dark White is no match for them due to her Sharing Field. Uzume transforms and activates her sharing field. The party makes short work of Dark White. Croire can't believe the Dark CPU was so easily beaten. Older Neptune sneaks up to Croire and captures her in her Nep-Note then announces Croire's defeat.
Croire demands that she be let out to no avail. With no obstacles in the way, Neptune thinks it is time to attempt to purify the world. Umio says they are deep in the dungeon and the plan should work. Neptune asks the CPUs for all their shares and everyone to pray. Neptune attempts the purification. Nothing seems to have happened. Neptune says that there was a reaction but the Share Energy was all neutralized. Umio thinks positively and says that they just need to solve their lack of Share Energy. Neptune thinks they should meet up with Nepgear and revise their plan.
The CPU Candidates and Gold Third rejoin the party in the Heart Dimension base. Nepgear explains that they first lost the console but thanks to everyone's help they got it back. In addition, they were concerned with the Dark CPU but the Share Crystal sorted that out for them. Nepgear wonders how were things with them as they came here because they followed Kurome but she escaped.
IF wonders what she means by follow. Ram says that they though Kurome would use Croire but she ran and eventually they lost sight of her. Noire asks how they can run from the Hyper Dimension all the way here. Uni explains that Kurome broke the rubble that Neptune created and ran here. Older Neptune says it must have been because they captured Croire.
K-Sha wonders what the CPUs were up to while they were all away. Noire explains that after defeating the clones, Uzume got confused but Umio was able to help her clear her head. The hatred Kurome took tainted her memories making them seem worse than the actual events. Uzume and the world never actually hated each other. Uzume says the credit goes to Nepgear. Nepgear wonders what she means. Umio explains that the reports Nepgear found contained the true history prior to Uzume being sealed. He theorizes that because the Zero Dimension was based on Uzume's memories, the reports were able to appear there. Umio offers his gratitude to Nepgear as well.
An earthquake occurs and Neptune wonders what is happening. Croire says Kurome has finally done it. She has taken in the power of the CPU from another dimension. A fraction of this power can move dimensions with ease but it will likely consume Kurome as Croire told her she should only use after she has revived. Umio thinks she is trying to speed up the fusion of dimensions. Croire remarks as they are all here, she can finally record some interesting history. Uzume has a plan and they must find her. The party searches for Kurome.
The party manages to find Kurome Ankokuboshi in a dungeon. Kurome asks what they plan to do, they kill her, both of them and this world disappears. If they let her go, the dimensions will fuse and she will become the Hyper Dimension. Uzume reveals her plan which is to beat Kurome up and take the power of the CPU from another dimension. If they have the power, they can stop the dimensions from fusing.
Uzume declares that today is the day she defeats herself that is drowning in hatred. Kurome declares that she will defeat herself and all the others in the way. Kurome wanted to have them all alive to experience the eternal hell she was going put Gamindustri through but they are becoming a major interference in her plans. Kurome summons all the Dark CPUs to fuse with them to become Dark Orange.
Dark Orange calls the party useless as they are unable to fight with Sharing Field. No Sharing Field can contain her. Uzume says she has an ace card and points the giant Share Crystal in the Heart Dimension. Dark Orange warns her that using the crystal is like using their "lifeline". They will both die. Uzume says she is not suicidal and will use the crystal until there is a little bit of shares left then turn it off. That way, Dark Orange will weaken too.
Dark Orange is angry but calls it useless. Uzume calls this her last HDD and transforms to Orange Heart to activate the Sharing Field. The party manages to defeat Dark Orange.
Dark Orange says that she cannot die yet until her revenge on Gamindustri is complete. Uzume tells Dark Orange that she will never get her revenge. Kurome performs one last act of vengeance and takes the power of the CPU from another dimension down with her.
A monster horde is heard. The horde is coming by land, sea and air and are heading towards the Hyper Dimension. Croire explains that she must have given the order to the monsters to destroy the Hyper Dimension just as she died and remarks that she truly went down gun blazin'. Umio is awe of her tenacity but corrects himself to say malice. The party is unable intercept the horde as they lack manpower and supplies. They lack the time to return to the Hyper Dimension to prepare a proper defense. S-Sha admits Kurome did manage to win.
Uzume has one final plan and asks Nepgear to destroy the giant Share Crystal then the party must head back to the Hyper Dimension. Nepgear is unwilling to do so but her sister assists her and the two destroy the giant Share Crystal and the party leaves. Umio says everyone has left. Uzume requests one last thing from her friend, she has asked all the monsters of the Zero Dimension to assemble at their head base. She wants Umio to bring them to the Hyper Dimension.
Umio asks if she means to do everything alone. Uzume apologizes for being unable to keep their promise but Umio is the only one who can lead the monsters to safety. Umio agrees to the request and leaves.
The party heads back to the Hyper Dimension through the portal Histoire created. Umio comes in and reports that he has all the monsters of the Zero Dimension and kept his promise to Uzume.
The Swirl Console then breaks signalling the end of the monster horde and Uzume.
A few days have passed and Umio has finished preparing the tea asking Histoire to rest. Histoire thanks Umio and plans to go on break soon. Umio asks Histoire about the Planeptune sisters. Histoire explains that the sisters were depressed but they are starting to return to their nomral selves. Histoire wonders about Umio. Umio cannot believe that Uzume has disappeared and feels she will show up somehow. Either way he does not have the luxury to mope since he has to take care of the Zero Dimension monsters.
Histoire assures him that everything will turn out well and asks if Older Neptune has going touring today as well. Umio tells Histoire that she is Lowee trying out the new Blanc manjus. Histoire comments on how both Neptunes have a sweet tooth and asks what is the blend for the tea today. Umio says it is his own personal blend that he is proud of and Uzume and fond of.
Umio has successfully gather all of Zero Dimension's residents. Seeing as how it takes too long to send the monsters to the Hyper Dimension through the dimensional gate. He decides to gather them all up in Affimojas' ship. He then waits for the captain's return. Affimojas, Neptune, Nepgear, Uzume, older Neptune and Steamax arrive. Umio is glad to see Uzume. Uzume is embarrassed at the fact that she is here despite what she said to Umio earlier. Umio does not care and he is happy to just see Uzume safe and sound. Uzume asks about the monsters in the Zero Dimension.
Umio explains that the evacuation of the monsters was easy as they all somehow heard Uzume's voice in their head so they all gathered up. Uzume asks where are they now? Umio said he did try to get through the gate to the Hyper Dimension but that took too long so he put them in this ship instead. Uzume is happy to hear that and collapses. Umio is concerned that she just collapsed but Steamax assures him that she is fine and only exhausted.
The horde suddenly attacks the ship. Neptune and the others decide to take care of the problem. Uzume wakes upe and assists them but she spots Kurome during the fight. She pursues her with Neptune, Nepgear, older Neptune following along. Umio comes along as well. The group reunites with the party that had left for the Hyper Dimension as they wish to make sure Kurome is defeated.
The party has made it to the general location of Kurome Ankokuboshi. Uzume encourages the party to get going. Neptune asks Uzume to wait and do her special thing for good luck. Uzume wonders what she is talking about. Neptune is talking about her daydream scenes. Uzume does want to because they are embarrassing. In addition, it is not like she can consciously activate her daydream powers and Neptune should know that. Umio tells her to just try it. Uzume reminds the two that it is impossible. Umio clarifies that he does not need the daydream's power but as a good luck charm or a prayer. Uzume still thinks it is too embarrassing.
The candidates and E-Sha also encourage Uzume. Uzume agrees to doing her daydream scene. Uzume daydreams that they will beat the other Uzume and get their happy ending. Both Dimensions will be saved as Neptune wanted. Uzume will be saved as well. Uzume can no longer keep up her daydream persona as it is embarrassing. Nepgear disagrees as she thinks it is cool. Neptune is ready to go as they have the prayer to beat Kurome.
Up ahead, they find Kurome. Uzume calls Kurome a tenacious bastard for being alive. Kurome admits she was beaten and did disappear but negative emotions revived her. They should have killed Uzume or destroyed the main seal. since the sealed body of Uzume constantly gathers negative emotions from the world. No matter how many times her soul is purified or that Kurome is killed, Uzume will be stained in darkness and Kurome can revive. Umio is disheartened by this. Kurome thinks being prone to assumptions and daydreams backfired for the party.
Uzume tells Kurome that she is the one with assumptions. The giant Share Crystal is destroyed so the sealed away Uzume is dead. Umio is in shock. Uzume concludes that the two of them are ghosts. She is here is because she is separate from her real self and therefore she won't die the same time her sealed self dies. Even if they give Uzume Share Energy, her real body will never revive. Uzume apologizes for keeping this from Neptune and the others.
Uzume says that is it and invites Kurome to hell with her. Kurome cannot accept that and transforms into Dark Orange. Uzume had planned to go alone into the grave but that plan is all in shambles. She says it is time for her final HDD and Sharing Field with the intent of using her life as fuel.
Dark Orange does not accept that and still clings to her desire for revenge on Gamindustri. The party fights Dark Orange and kills her. Uzume declares that with this she has disappeared and shortly following is the Zero Dimension and Heart Dimension. Neptune says that her predecessor's existence has been seared into her eyes. Nepgear says she will never forget her. Umio apologizes for not being able to save her. Uzume does not mind and enjoys the fact that she will never be forgotten by some people. That is much more than what she can ask for. Uzume admits she is reluctant to go but her time is almost up. She asks older Neptune to warp everyone to safety and gives Nepgear her Visual Radio. Older Neptune warps the party away.
Neptune announces to Histoire that they are back and everything has been settled. Histoire thanks them for all their hard work and reports that she has observed the disappearance of both the Zero Dimension and Heart Dimension. Umio and Neptune accept the fact that Uzume is gone. Histoire thinks it is too early to give up and decides to release Uzume's seal as there is a chnace to revive her. While Kurome can also revive, the Visual Radio may help Uzume revive instead. She asks if everyone is okay with it.
They are okay with it and reason that the people of Gamindustri came together to fight the monster horde because they wanted to save Uzume. Therefore, the party has a duty to bring Uzume back or else they let all of Gamindustri down.
Histoire explains that she will connect the peripherals to the console which is called the "main seal". Normally she would press the power button and release the seal but she will attach the Visual Radio first. The Visual Radio is showing Uzume's mark. Histoire then releases the seal and asks that Uzume receive everyone's prayer.
Umio's voice is heard in the duel between Uzume and Kurome. He advises Uzume that it is possible to accept the hatred she harbors. Uzume revives and announces that she accepts her existence. She apologizes for keeping everyone waiting. Neptune, Nepgear and Umio are glad to see Uzume. Uzume is grateful that she is here thanks to everyone's wishes. She thanks them and is glad to be back home in Gamindustri.
A few months have passed and Umio joins Uzume and older Neptune on their tour around Gamindustri. They decide to return to the Basilicom. Older Neptune announces that they are back. Nepgear is pleased to hear this. Uzume trips and falls on older Neptune. Older Neptune reports that the warp has messed up. Uzume says that this has hurt her ass. Umio wonders if Uzume is okay. Older Neptune thinks that this is weird as she thought she set the co-ordinates properly. She blames this on Croire. Croire says that this is her fault for keeping her in the book. If she does not like it, she should release her. Older Neptune says if she acts like this, she is less inclined to release her. She threatens Croire with pinning her down with needles. Uzume adds that she has lost count of how many times Croire has messed up the warp. Umio offers some needles he found from pufferfish. Croire does not want this and says she and her wings are delicate.
Nepgear tries to get their attention. Uzume realizes this and says it has been a while. Neptune sees that Uzume is healthy and wonders how is Gamindustri. Uzume thinks the people are nice and the food is great. In addition, she met an old man who was a boy that called her lame during her PR campaign with Umio way back. He bought a console from her nonetheless and managed to remember her even through the rewrite. Nepgear is happy this hear this. Uzume wants to tell them more about her adventures but Umio tells her she is forgetting something. Uzume apologizes and announces that she is home.
Umio sees Neptune and Uzume are sleeping in Uzume's base. Umio notices that the two of them seem to be sharing the same dream but he wonders what they mean when they mumble "his legs".
The kanji for Umio's name literally means "sea" and "man", and roughly translates as Seaman, a virtual pet video game for the Sega Dreamcast, hence his personification.