Real name: Yaniko Sato Gender: Female A cat-eared beastman who smokes constantly. A total nicotine addict living freely, though there's no justice to be found in her lifestyle. She wears a powerful smell instead of manners. Light green hair in a short cut above the shoulders. Imoko's older sister. She smokes 24/7, 365 days a year, regardless of the location. Speech style: Ends sentences with "Nya" or "nya." First person: Nya (casual/rough) Second person: You (blunt) Address terms: Imoko → Imoko-chan, Shizue → Shizue, Yaku Neko → Yaku, Kansai Neko → Kansai, Hame Neko → Hame-ko

Real name: Imoko Sato Gender: Female High school student Yani Neko's younger sister. A high school girl with no flaws other than her sister; she loves her useless sister and is always taking care of her. The only sane person in the series. Cat-eared beastman. Light purple (lavender) hair in a short cut above the shoulders, similar to Yani Neko. Lives with their mother, Shizue. First person: I (polite) Address terms: Yani Neko → Big Sis, Shizue → Mom, Kansai Neko → Kansai-san

Real name: Masuko Koshijimaru Gender: Female A pitiful person carrying a past she can't talk about. Surprisingly sensible. Yani Neko's junior from high school, a cat-eared beastman with short blonde hair. A drug addict. She looks like a thug at first glance, but her personality is kind, pure, and serious. Among the residents of the beastman apartment, she is a serious adult on par with the Landlord and Dr. Tatsuro. She is helpful and never fails to be considerate of others. Basically unemployed, but she feels a sense of crisis about it and constantly tries to find work. She was classmates with Hame-ko in high school. First person: I (humble/diligent) Second person: You (blunt) Speech style: Ends sentences with "-ssu" or "-ssu ne" (polite but casual) Address terms: Yani Neko → Senpai, Hame Neko → Hame-ko

Real name: Yurufuwa Angel Hame-ko Gender: Female She has a cool-beauty look with sharp features, but her intelligence is on the same level as Yani Neko. Like Yani Neko, she eats insects like mosquitoes and cockroaches without a second thought. A narcissist who can't grow out of her eighth-grader syndrome and childishness; her unnecessary talkativeness often leads her to dig her own grave. Her polite insolence—making rude, condescending remarks with a smile—often causes trouble. She frequently plays pranks or teases the residents of the beastman apartment, usually suffering a terrible fate as a result. She has known Yaku Neko since high school, and they have a frenemy-like relationship. She is one of the few characters Yaku Neko speaks to casually. First person: Hame-chan Everyone basically calls her "Hame-ko."

Real name: Kaoruko Nishi Gender: Female She has a great figure matching her looks and is one of the main sources of sex appeal alongside Yani Neko and Dr. Tatsuro. She is the most fashion-conscious resident of the apartment, putting effort into her clothes and makeup. In her first appearance, she wore a keyhole turtleneck. She smokes with a cigarette in her mouth and speaks in a casual regional drawl (Kansai dialect). Her appearance is somewhat like a hostess, leading Imoko to suspect her of being a neglectful young mother. At university, she hides her drawl and smoking, acting as a refined and mature woman, which makes her an object of admiration for both men and women. However, when drunk, she changes to an unimaginable degree, becoming annoyingly clingy with anyone nearby. First person: I (regional drawl) Address terms: Yani Neko → Yaniko, Imoko → Imoko-chan, Saori Tatsuno → Sis, Alu Neko → Alu-ko. Calls everyone by their first name without honorifics.

Real name: Aluko Sakai Gender: Female Yani Neko's friend and a resident of the same beastman apartment. Surprisingly, she is 24 years old. She has repeated two years of university. A beastman woman with a sleepy face and a massive amount of hair. She is so small and baby-faced that she is often mistaken for an elementary schooler; Imoko thought she was a child when they first met (Kansai Neko later cleared up the misunderstanding). Her body is extremely thin, likely because she doesn't eat proper meals. Despite her appearance, she is a third-year university student and is actually older than Yani Neko. First person: I (soft/boyish)

He claims to live in harmony with nature, cutting off all ties with society, but he normally uses things made by human society like tents. According to Penpen Neko, it's fine because he "found" them, but his application of his own rules is quite arbitrary, such as going to the supermarket in the next town once a week. He acts sophisticated and enlightened in front of others, but it's all a front. First person: I (soft/polite)

Real name: Saori Tatsuno Gender: Female Yani Neko's friend and a resident of the same apartment. 32 years old. The only human female among the regular characters and a professional adult manga artist. Recently, she has also started a serialization in the general youth magazine "Nyung Magazine." A heavy smoker who loves Hi-Lite Menthol. Since she writes using analog methods and is prone to shyness, she sometimes hires Yani Neko, a fellow smoker, as an assistant. Her nickname used by Yani Neko and the narrator is a crude abbreviation of "Manga-ka no Yani-kasu" (Manga Artist Nicotine Addict), but she doesn't seem to mind (though the Landlord got an erection when he first heard it). First person: I (polite) Address terms: Yani Neko → Yani Neko-chan

Real name: Shizue Sato Gender: Female The mother of Yani Neko and Imoko. She has a gentle, saint-like atmosphere but is a secret super-heavy smoker. When Imoko is not at home, she smokes 10 to 20 cigarettes at the same time. She has white hair, black cat ears, and chest-length hair. She is well-endowed. A cat-eared beastman with dark yellow eyes. First person: I / Shizue Address terms: Yani Neko → Yaniko-chan, Imoko → Imoko-chan

Real name: Oya Otani Gender: Male The landlord of the beastman apartment where Yani Neko and the others live. Age: 45. He is rarely called by his real name and is basically just called "Landlord." A tough-looking man with a shaved head and eyes hidden in shadow. He has a very thick, muscular build to the point where his neck is barely visible. True to his physique, he is very strong; he has been seen restraining thieves who broke into the apartment and disciplining beastmen who have higher physical abilities than humans. His combat power is very high. First person: I (rough)