Characters / No. 6

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Main Characters


Voiced by: Yuuki Kaji (JP), Greg Ayres (EN)

A boy raised among the elite of No. 6, only to be stripped of his privileges after giving shelter to Nezumi, a fugitive. He is unfailingly polite and idealistic and refuses to give up on saving the people of No. 6.
  • Adorkable: Often.
  • Adaptation Dye-Job: His eyes were violet in the novels as opposed to the red in the anime and manga.
  • Back from the Dead
  • Ambiguously Bi: Possibly inverted. When Safu tells Shion she wants to have sex with him, he is taken aback because to him they are Just Friends, but gets flustered at the idea and pledges to do it with her when she comes back from studying abroad. Of course, this gets derailed entirely when Safu Ascends to a Higher Plane of Existence, and Shion appears to be much more infatuated with Nezumi anyway.
  • Badass Adorable: He seems all cute and innocent on the outside, but mess with someone he cares about, specifically Nezumi, get ready for the beatdown of your life.
  • Berserk Button: Don't insult or even attempt to harm Nezumi in Shion's presence. It may very well be the last thing you do.
  • Bishōnen: Not nearly on the same level as Nezumi, but he still qualifies.
  • Brainy Brunette: Before the wasp, anyway.
  • Break the Cutie: Shion, in the Correctional Facility
  • Child Prodigy: Before meeting Nezumi, Shion was an ecology major in the city's gifted program with enough practical knowledge to safely suture wounds at the age of twelve.
  • Did Not Get The Guy Or Girl: Played with. Not only does Nezumi leave him behind when the walls around No.6 come down, Safu, his Het Option, Ascends to a Higher Plane of Existence. However, Nezumi and Shion did become the Official Couple, and Nezumi promises to come back to Shion eventually at the end of both the novels and the anime.
  • Disappeared Dad: Mentioned only in the novels. His mother claims he was careless with money and women and was borderline alcoholic.
    • Beyond gives more information. Also, Nezumi meets him.
  • Disease Bleach: The reason for his white hair.
  • Even the Guys Want Him: Nezumi, of course, but he was also hit on by a greasy old corpse-collector, with promises of drinks and meat, no less.
  • Friend to All Living Things: He took in the fugitive Nezumi and treated his wound when they were children, dooming his bright future in the process. Years later, Nezumi's mice take a liking to him (he even gives them names), he reads to the neighboring kids in the Western Block, he gets along with Dogkeeper and their dogs, and Rikiga even calls him an "angel" at one point.
    • And at the end of the anime, he even adopts the ridiculously cute baby he saved two episodes earlier.
  • Genius Ditz : Even though Shion is naive and lacks a sense of self-preservation, he was ranked the highest in the city's intelligence test when he was just two-years-old.
  • Ho Yay: With Nezumi. Invoked deliberately, and by the end, confirmed.
  • Locked into Strangeness: After his encounter with the wasp. Shion after surviving the wasp being born. He also gains a red snake-like mark curled around his body from his ankle to his neck. Not that Nezumi minds.
  • Love Makes You Crazy: When Nezumi is threatened, Shion switches from either all-out rage or cold, rational and murderous.
  • Momma's Boy: Well, his mom is Karan. Shion was raised solely by his mother and both of them are (happily) devoted to one another.
  • Morality Pet: For Nezumi. An unusual example in that he struggles with moral issues himself— in fact, he becomes more willing to hurt others through his association with Nezumi, in a sort of reverse Morality Pet effect.
  • Meaningful Name: "Shion" is a flower (specifically, a type of aster) with medicinal value. The flower also means "I will remember you" or simply "remembrance" in Japanese tradition, which could allude to the ending.
  • Nice Guy: To a fault.
  • The Pollyanna: No matter how grave the situation, Shion can very nearly always find the silver-lining, even after being relegated to the equivalent of the slums for No.6, becoming targeted by the city, losing his mother and best friend, and discovering a massive government conspiracy.
  • Red Eyes, Take Warning: Averted most of the time. Threaten Nezumi, however, and see what happens.
  • Spell My Name with an "S": Shion/Sion.
  • Violently Protective Boyfriend: Do NOT insult or endanger Nezumi.
  • Wide-Eyed Idealist: He's more on the cynical side, but firmly believes that a bright future is attainable.
  • Yandere
    • In the novels, Shion is close to strangling a man because he tried to kill Nezumi. Only when Nezumi pleads with him to stop does he snap out of it. And then there's his explanation as to why:
    "That man tried to kill you, so he had to receive punishment."
    • He also violently attacks Rikiga when he makes a pass at Nezumi and later shoots a guard at point-blank range after he seriously injures Nezumi.


Voiced by: Yoshimasa Hosoya (JP), Kalob Martinez (EN)

A cynical young man with a dark past. He was saved by Shion when they were younger, only to return the favor years later. Due to his experiences in No. 6, he hates most everything about the city and its people, and is perfectly willing to watch it fall.
  • A Boy and His X: With his mice.
  • Attractive Bent-Gender: As his local theater was swift to notice, Nezumi makes a really good-looking woman.
  • Badass: He's awesome personified in this world.
  • Bishōnen: Pretty enough to be hit on multiple times and to play in drag as the beautiful Ophelia.
  • Cultured Badass: His room is cramped with bookshelves filled with classical literature, and he's an actor by trade.
  • The Cynic: Especially compared to Shion, though he does have moments where this is inverted later in the anime/manga.
  • Dark and Troubled Past
  • Dude Looks Like a Lady: He's a talented actor and performs in Shakespearean plays for a living. Shion first sees him playing Ophelia in Hamlet.
  • Easily Forgiven: Shion was furious when Nezumi admitted that he was using Safu as an excuse to break in the facility for his own agenda. All is forgiven when Nezumi is seriously injured (only a few minutes after the revelation) and Shion rushes to heal him.
  • Even the Guys Want Him: Shion being the main example. There is also the two mooks who wanted "payment" from him after he kisses the prostitute, and is also implied by Rikiga when he offers Nezumi a job as a gigolo.
  • Gray Eyes: Occasionally silver. Shion can hardly go without mentioning them.
  • Ho Yay: With Shion. Invoked deliberately, and by the end, confirmed.
  • Jerk with a Heart of Gold: He can be a jerkass at the very least. But he also sings to Dogkeeper's dying pack members to ease their suffering, to say nothing of what he'll do where Shion is concerned.
  • Only Known by Their Nickname: For lack of a given name.
  • Last of His Kind: Nezumi is all that is left of the Forest People that lived on the site where No. 6 was built.
  • Tall, Dark and Snarky: Oh yes.
  • Magical Native American: He can "hear" nature, and can sing a song of calming.
  • Meaningful Nickname: "Mouse" or "rat", a name given to him after escaping the destruction of his homeland and the slaughter of his people. His real name is never revealed in-series.
    • He also goes by "Eve" when onstage. Two guesses as to who Adam is...
  • Real Men Wear Pink: He's extremely tough and stoic, but also loves reading and singing, and regularly performs in drag.
  • Scars Are Forever: The massive burn scars on his back are courtesy of the flamethrower-wielding No. 6 soldiers that slaughtered his people.
  • Tsundere: Especially towards Shion. He'll deliver an angry rant at No. 6, but the moment he sees Shion is upset he gently comforts him. Also, maybe towards Inukashi if you tilt your head and squint, though he'd probably die denying it.
  • What Beautiful Eyes!: In the novel, Shion almost cannot mention Nezumi without talking about how beautiful his eyes are.
  • Wholesome Crossdresser: As part of his acting job. He's very good at it, too.
  • You Gotta Have Blue Hair: Blueish, grayish, off-purpleish, depending on your point of view.

Residents of No.6


Voiced by: Kiyono Yasuno (JP), Hilary Haag (EN)

Shion's childhood friend and a fellow resident of No. 6. Like Shion, she's a child genius - her expertise is the human brain and to a degree, psychology. Also like Shion, Safu begins to show doubt about the utopia that is No. 6.
  • Ambiguous Disorder: Often seems lost in social situations, such as her proposal to Shion or cluelessness about romance when studying abroad. However, her behavior may just be a result of growing up as a sheltered child prodigy.
  • Ascended to a Higher Plane of Existence: She becomes a physical medium for Elyurias.
  • Adaptation Expansion: She is given a much larger focus in the Anime than in the original novels.
  • Berserk Button: Go ahead, interrupt her presentation on the human mind or insult her grandmother.
  • Brain in a Jar: Though it was never explicitly shown what happened to her body after the operation, we can be sure there was not much left of it (aside from her brain, perhaps...). As in the manga version Safu that Shion and Nezumi met in Correction Facility was merely a projection that "came to life", because Elyurias made her wish "I want to meet Shion one more time" come true.
  • Brainy Brunette
  • Child Prodigy
  • Damsel in Distress: After being captured by the Bureau of Public Security. Turns into a Damsel out of Distress when she uses Elyurias' power to help Nezumi and Shion by controlling the Correction Facility's computers, although her role consists less of kicking ass and more of standing around and looking kinda creepy.
  • Heroic Sacrifice: When Nezumi and Shion blow up Mother, she stays behind with Elyurias in order to destroy it for good.
  • Incompatible Orientation: The fate of her affections toward Shion.
  • I Want My Beloved to Be Happy: Tells Shion she's fine with him having a girlfriend while she's gone and brings him Back from the Dead (in anime only) while possessed by Elyurias before Ascending to a Higher Plane of Existence
  • No Social Skills: She functions well in No. 6, however she's seen as odd by her peers when she studies in No. 5. It certainly doesn't help that her request to Shion before she leaves to study abroad is "I want to have your sperm."
  • Sweater Girl
  • Unlucky Childhood Friend: Shion flat-out states in the novels that while he treasures her as a friend, he does not and cannot return her romantic feelings. Aside from Shion's attachment to Nezumi, circumstances just do not work in her favor.


Voiced by: Rei Sakuma (JP), Lesley Pederson (EN)

Shion's mother. With Shion, she was sent to live down in Lost Town where she opened up a bakery. She and Nezumi contact one another through strips of paper brought by mice.
  • Dude Magnet: She has a lot of admirers...
  • Friend to All Children: Thinks children are adorable, and strongly believes it is an adult's responsibility to protect them.
  • Good Parent: She really loves Shion and isn't upset at all about their downgrade from a life of luxury.
  • Mysterious Past: At least one photo of her exists with the Founding Members of No.6. She also knew where Rikiga was likely to be in the West Block.


Voiced by: Shinichiro Miki (JP), Karl Glusman (EN)

One of the residents of No. 6, and a resistance fighter. Yoming first begins to suspect something is amiss in the city when his wife and child mysteriously disappear. He takes interest in Karan after Shion's disappearance.
  • Conspiracy Theorist: Luckily (or unluckily), the conspiracy is real.
  • Karmic Death: Though starting out with the intention of avenging his family's death, he eventually descends into creepy and unwanted advances on Karan and gleefully planning to incite a mob bloodbath on No. 6's founding anniversary. He ends as another victim of the birth of the wasp.

Residents of the West Block


Voiced by: Kei Shindou (JP), Luci Christian (EN)

One of the residents of the West Block outside of No. 6. Inukashi, quite literally "Dog Keeper," is a brash, often dangerous individual who spends their time either renting out their many dogs as heaters during the winter or smuggling in items to sell from an illicit contact within No. 6's correctional facility. They have a very violent, volatile relationship with Nezumi, but Nezumi still often goes to them to gather information - for a price.
  • Ambiguous Gender: Assumed by some to be female, based on their small stature, nice legs, and one mention of 'softness' when they were hugged, however official information does not give a definite answer one way or another.
    • Samus Is a Girl: Treated by the other characters as male, until used as bait to lure in a No. 6 higher-up: Shion, trying to comfort Inukashi afterward, wonders if his friend might actually be a girl. The rescued baby from episode 10 also calls Inukashi "mama". Even so, Inukashi never personally discusses their gender identity, so there's no way to know.
  • Crossdressing Voices: Sort of.
  • Berserk Button: Inukashi does not react well when their dogs, especially their 'mother', are insulted.
  • Meaningful Name / Only Known by Their Nickname: Inukashi literally means "dog-keeper", or "dog-loaner".
  • Raised By Dogs: Their "mother" was a dog that offered milk and kept them safe.
  • Tsundere: Only towards Shion. Maybe, maybe towards Nezumi too. Shion thinks so, Inukashi - like Nezumi - would deny it to the point of death.


Voiced by: Masaki Terasoma (JP), Chris Hutchison (EN)

One of the residents of West Block. He runs a prostitution service which allows him a life of luxury in comparison to other residents. At one point, he wrote articles regarding No. 6.
  • Cowardly Lion: He really doesn't want to get involved in Shion and Nezumi's plans, but does so anyway.
  • Fanboy: He really likes Eve, Nezumi's stage persona. He's less charitable towards Nezumi, given that well, it's Nezumi.
  • Intrepid Reporter: Hinted that the reason he was sent to live in West Block was due to his articles questioning No. 6's activities.
  • Parental Substitute: He tries to be this to Shion from time to time, given that he's still attached to Karan.



Voiced by: Mao Daichi (JP), Genevieve Simmons (EN)

A mysterious entity, subject to much research by the scientists of No. 6. Elyurias once existed in the forest that was destroyed by No.6's operatives, and has power over nature. She was worshiped by the Forest People as a god. No. 6's government has gone to great lengths to research how to control her power.
  • Bee Afraid: Elyurias occasionally appears as a giant one.
  • Gaia's Vengeance: Unleashes this on the city during the ending.
  • Face Full of Alien Wing-Wong: Elyurias reproduces by laying eggs in the bodies of other species. Namely, humans. The process of a bee being born causes the host to rot away very, very quickly.
  • Symbiotic Possession: Though forcibly implanted into Safu, they do not seem to bear each other ill will.