Real name: Yaniko Sato. Age: 21. Gender: Female. Race: Beastman. Residence: Beastman Apartments, Room 204. She is constantly smoking, and cigarettes are her top priority in everything. She lives a lazy life in a filthy, smoke-filled room. Her younger sister, Imoko, once told her that her only redeeming qualities are her face and body. The neighborhood kids call her "Nicotine Fiend." She lacks a sense of ethics and hygiene, doing things she shouldn't, like throwing butts out the window or dropping things on the landlord from her balcony. Despite this, she lives happily surrounded by her meddling sister and apartment friends. Imoko often confiscates her cigarettes, but she always has a secret stash hidden somewhere. Whenever something unfortunate happens to her, her catchphrase is "Nyaa hasn't done anything wrong..." She ends her sentences with "nya" or "nyaa." First person: Nyaa.

Real name: Masuko Koshijimaru. Age: 20. Gender: Female. Race: Beastman. Residence: Beastman Apartments, Room 203. A loyal junior who looks up to Yani-neko as her "senpai," though she strayed from the path in the past and has a criminal record. She is currently trying to go straight and live a normal life. She is bright, energetic, and friendly, but has a side that keeps people at a distance. Surprisingly, she has a fair amount of common sense. She loves living creatures and has an unexpected side, like going bug hunting. Apparently, she was in the same class as Hame-neko in high school. She ends her sentences with "-ssu" or "-ssu ne." First person: I (polite/neutral).

Real name: Yurufuwa*Tenshi Hameko. Age: 20. Gender: Female. Race: Beastman. Residence: Beastman Apartments, Room 201. A fighting game player who streams videos on her channel, "Hame-Channel." She is free-spirited, high-energy, and often acts on a whim. She frequently teases Yaku-neko in a cutesy, feigned-innocent way to make her snap, which usually results in her getting a "vibrating foot massage" (denki amma) as punishment. When she loses at fighting games, she flies into a rage and punches her arcade controller. She ends her sentences with "~" or "-dayo~." First person: Hame-chan.

Real name: Kaoruko Nishi. Age: 22. Gender: Female. Race: Beastman. Residence: Beastman Apartments, Room 106. A university student who speaks in a Kansai dialect. As long as she stays quiet, she's a stylish beauty. She is hungry for laughs but lacks the actual comedic talent. She is bright and goes with the flow. She constantly thinks up retorts and jokes, but no one ever laughs; however, her spontaneous, unthinking retorts are surprisingly funny. Apparently, she stays quiet at university and is held in high regard by those around her. She speaks in a heavy regional drawl (Kansai-ben). First person: Uchi (regional/feminine).

Real name: Alko Sakai. Age: 24. Gender: Female. Race: Beastman. Residence: Beastman Apartments, Room 105. She has a calm, gentle atmosphere and does things at her own pace. She loves alcohol and is drinking constantly. Even while sleeping, she keeps a catheter in a liquor bottle and drinks from it like a straw. If she stops drinking, her hands shake from withdrawal symptoms. Because she looks like an elementary schooler, she is often misunderstood, but she is a full-fledged university student (who has repeated two years). She has a slow, relaxed way of speaking. First person: Boku (boyish/soft).

Real name: Saori Tatsuno. Age: 32. Gender: Female. Race: Human. Residence: Beastman Apartments, Room 206. One of the few humans living in the Beastman Apartments. She is a professional manga artist and a heavy smoker. Because she stays up all night drawing manga, Yani-neko gave her the terrible nickname "Mankasu" (Manga Trash). The name Tatsuro comes from her pen name, "O-chinpo Tatsuro." Like Yani-neko, she is a heavy smoker, but she has common sense and won't smoke in front of people who dislike it, making her fundamentally different from Yani-neko. She is often driven into a corner by manga deadlines. She speaks normally. First person: I (neutral).

Real name: Ouya Otani. Age: 45. Gender: Male. Race: Human. Residence: Beastman Apartments. The manager of the Beastman Apartments where Yani-neko and the others live. He looks scary at first glance, but he is a caring person with common sense. He constantly nags the residents (especially Yani-neko) about their bad behavior. The residents don't take him seriously at all, making him the one who suffers the most. Because he was raised and treated poorly by a heavy-smoking father, he treats the residents like family to ensure he doesn't become like him.

Real name: Nazuna Kujo. Age: 25. Gender: Female. Race: Beastman. Residence: A tent in the Beastman Apartments parking lot. She ran away from the wealthy Kujo family because she thought it "looked cool" and decided to live in nature (homeless). In front of others, she acts sophisticated and utters philosophical lines, but it's all a bluff; when faced with a crisis, her weak, worldly true nature comes out. Her family transfers 1 million yen to her every day, but she likely lost her bankbook or doesn't know it exists, so she doesn't use it. On the surface, she acts like a detached hermit. According to her, she lives in harmony with nature, free from greed, but since she lives in a tent in an apartment parking lot, there's no nature to speak of. She claims the tent is fine because she found it. She speaks in a calm, composed manner. First person: Boku (soft/detached).

Real name: Imoko Sato. Age: 17. Gender: Female. Race: Beastman. Residence: Yani-neko's family home. The younger sister of the infamous Yani-neko, but she is a serious, reliable, and high-achieving high school student. She is harsh toward her sister, but it's all out of love. She visits the apartment occasionally to take care of her sister, confiscating her cigarettes or nursing her when she has a cold. She is very polite. Her speech ranges from formal to assertive when dealing with Yani-neko, and she talks like a normal high schooler with her friends. First person: I (polite/neutral).