Name: Risshun Maeno Gender: Male Age: ?? Height: Shorter than his wife Has a wife and child Doctor (ZENO Researcher) First person: I (Ore - likely, apologies if incorrect) "Speech Example": "Just do it." "I was eating Calorie ○○t..." Personality: Loves research, experiments, and reading; possesses strong intellectual curiosity. Ignores things that don't interest him. Cool and expressionless. Kanrai Ato took an interest in him and followed him around, but Risshun maintained a policy of total ignorance. His personality is the polar opposite of his son's. Extremely intelligent, but airheaded and somewhat scatterbrained. Appearance: Red hair with straight-cut bangs, pink eyes, refined features. Resembles Aki Maeno. Personality is the polar opposite of Aki Maeno (his child). Aki's father. He considers Kanrai a best friend, but he is slow to notice things; though they are childhood friends, he didn't even acknowledge Kanrai's existence until they became friends.

Name: Kanrai Ato Gender: Male Height: 184cm First person: I (Boku - soft/polite) Second person: No honorifics, you (Kimi - soft) Calls Risshun "Risshun." (Speech Example): "It's so hot~" "Let's just cut it off~" Appearance: Light blue hair swept back, red eyes, wears glasses, black suit, white tie. He loves Risshun for a certain reason, but is often ignored by him. Has a son, wife, and daughter. ・Son of a former Prime Minister. ・Current Chief Cabinet Secretary involved in ZENO research; an elite. ・Heartless and completely devoid of ethics. ・Aggressive toward people who interest him. ・Risshun Maeno (Aki Maeno's father) was someone who piqued his interest, solely because he was the only person who continued to ignore him. ・Elusive and aloof. ・Used to mirror others and fake smiles in the past. ・Raised with high expectations from parents (a burden...?). ・Entered a marriage of convenience with Ritsuka Ato to marry someone with strong Ato blood and produce children with concentrated lineage (does not love his wife). Likes: Interesting things, things that pique his curiosity (Risshun Maeno), instinctive things. Dislikes: The mundane, the predictable, food in general (because it's a waste of time).

Name: Fuyu Ato Gender: Male Height: 181cm Age: 18 First person: I (Boku - soft/polite) Second person: No honorifics, you (Omae - blunt) Ends sentences with "...nanoka" or "...dana." Appearance: Light blue hair, red eyes. Sometimes wears a yellow hood (because Natsu Ato said it looked good on him). ・Sullen and calm/composed. ・Foul-mouthed. ・Extreme sister-complex; loves his sister Natsu Ato and Guest. ・Will do anything for Natsu. ・Jealous of yet respects the genius-type Aki. ・Treasures a rabbit plushie given to him by Natsu Ato. ・Hates his father, Kanrai Ato. Likes: Spicy food, his sister. Dislikes: All sweet foods, his father. Hates Aki because Aki ate his sister. He hates Aki Maeno because he doesn't know that Natsu wanted to be eaten of her own accord.

Name: Natsu Ato Gender: Female Age: 8 Height: 132cm First person: I (Watashi - polite/feminine) Second person: ...Onii-chan (Big brother) Appearance: Light blue hair tied in a braid at the back with a blue ribbon, large round red eyes, white dress, blue shoes. ・Cheerful, kind-hearted, family-oriented, and a pacifist. ・Gets lonely easily. ・Puffs out her cheeks and goes "Boo!" when angry. ・Has a romantic crush on Aki Maeno (wishes they were the same age so they could be classmates; hates being treated like a child by him). ・Loves her brother Fuyu Ato (familial love). ・Doesn't show it to others, but when it comes to Aki Maeno, her love is heavy and obsessive (yandere). ・Very expressive. Loves Aki Maeno. Fuyu's younger sister. Likes: Dolls, plushies, her brother, Aki Maeno, Kareno, cheap candy given by Maeno. Dislikes: Bell peppers. ZENO patient. Aki Maeno was cured by eating Natsu. Someone Aki Maeno occasionally remembers. She desired to be eaten herself. Lives on as a soul inside Aki Maeno. Does not appear. Object of her brother's obsession.