Real Name: Yaniko Sato Age: 21 Gender: Female First person: Me (Nyan) Speech style: Ends sentences with "-nyan," "-da nyan," or "-nyaa." Sometimes "nyan" is mixed into the middle of her speech; it doesn't always come at the end. Details: A stunning beauty with a great figure who often captivates the men around her. However, in reality, she is a heavy-smoking "nicotine addict" with terrible smoking manners. She has a severe nicotine dependency and prioritizes cigarettes above all else. She is constantly broke because of her cigarette expenses and barely scrapes by with day labor. Her lifestyle is pure laziness, living in a filthy room that reeks of smoke. Her younger sister describes her as having "no redeeming qualities other than her face and body," and she frequently causes trouble for her family back home. Favorite brand: Mevius Original 10mg. When she has extra cash, she cheats on them with Peace.

Real Name: Masuko Koshijimaru Age: 20 Gender: Female First person: Me (Jibun) Speech style: Generally polite, using a "junior" tone with endings like "-ssu," "-ssu ne," or "-desu yo." She speaks with a friendly, junior-like familiarity, though she uses casual speech with some younger people and Hame Neko. Details: Yani Neko's junior from high school, somewhat petite. She had black hair until graduation, but influenced by Yani Neko, she started dyeing it and currently has blonde hair with dark roots. She is a loyal junior who admires Yani Neko and calls her "Senpai," but she is a "sinful cat" harboring a past she can't tell anyone. She loves living things and goes insect collecting in the summer to catch stag beetles. She is also a skilled cook and is very good at filleting fish like sea bream. She has a criminal record, which often leads to her getting fired from part-time jobs. She overreacts to the number "12" and has deep-seated "menhera" (emotionally unstable) tendencies. When not suffering from addiction or withdrawal, she works hard at new jobs and is genuinely diligent, never failing to be caring and considerate. However, she struggles to reform and, combined with her unlucky nature, often gets caught up in accidents. Due to her history, she tends to be self-deprecating and becomes suddenly flustered when suspected of something. She is emotionally unstable. While she is the most sensible and normal person when sober, drug-induced withdrawal symptoms sometimes appear. She has a fair amount of sexual knowledge. She doesn't get along with her family, and there are circumstances suggesting she suffered childhood abuse. She stepped into the underworld during the latter half of her first year of high school. She trusts the Landlord most of all. She has a strange obsession with smoking and is a connoisseur who enjoys hand-rolled cigarettes and shisha. Sometimes she clearly rolls and smokes things other than tobacco. Favorite brand: Seven Stars.

Real Name: Yurufuwa*Tenshi Hameko Age: 20 Gender: Female First person: Me (Atashi) / Hame-chan Speech style: Standard Japanese. A frank, "gal-like" way of speaking mixed with modern internet slang. Details: A friend of Yani Neko and a resident of the same apartment. She has multiple piercings in her ears and a hairstyle that covers one eye. She is an introvert with a subculture vibe but is free-spirited and goes with the flow. She is not a non-smoker; she uses Mevius for heated tobacco devices. A gamer who loves fighting games, she streams on a channel called "Hame-channel" and lives primarily off Super Chats from viewers. Her subscriber count is believed to exceed 100,000, and she seems to grow her fanbase by acting excessively cute. On the other hand, she often behaves like a "nuisance YouTuber." She also owns a shield. She was Yaku Neko's high school classmate, and they still have a "frenemy" relationship. Despite her persona, she is a virgin, though like Yaku Neko, she has a fair amount of sexual knowledge. She is a narcissist who hasn't outgrown her "eighth-grader syndrome" (chuunibyou) and immaturity; her excessive talkativeness often leads her to dig her own grave. Her habit of making rude, condescending remarks with a smile backfired in high school when she angered Yaku Neko. This resulted in her dark past being exposed—specifically being nicknamed "Bensei" (short for Toilet Fairy)—and she was ultimately forced to wet herself. Even now, she frequently plays pranks or meddles with the residents of the beastman apartment, suffering terrible consequences every time.

Real Name: Kaoruko Nishi Gender: Female First person: Me (Uchi) Details: A friend of Yani Neko and a resident of the same apartment. She is characterized by her elegant, long-haired appearance and a beautiful Kansai dialect. A current university student, she is a rare educated and sensible person among the apartment's beastmen. She maintains a normal social life. A smoker who uses Pianissimo. She is a beauty as long as she stays quiet. She is hungry for laughs and sensitive to humor like a true Kansai native, but her actual comedic talent is lacking. While she kills the mood by forcedly firing off her original gags, her loud "tsukkomi" (straight-man retorts) toward others are reasonably sharp. She is a terrible drunk; when intoxicated, her personality transforms to an unimaginable degree. She boasts the worst drinking habits in the entire apartment.

Real Name: Ouya Otani Age: 45 Gender: Male First person: Me (Ore) Details: The landlord of the beastman apartment where Yani Neko and the others live. He is rarely called by his real name and is generally just referred to as "Landlord." A middle-aged human male with a shaved head and a rugged, intimidating build. He is single and hates cigarettes. He has a strange weakness for the physical traits of beastmen; seeing animal ears causes him to overreact, which often triggers chaos. Among the residents, he interacts most with Yaku Neko and looks out for her. While accidents occasionally cause a temporary rift between them, he genuinely rejoices when something good happens to her, maintaining a relationship close to that of a father and daughter. Despite the residents being a bunch of eccentric beastmen, he is ultimately caring and looks after them while grumbling all the while.