Real name: Yaniko Sato Gender: Female A cat-eared demi-human who smokes constantly. A total nicotine addict living freely, though there's no justice to be found in her lifestyle. She wears a powerful stench 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 where she is. Sentence ending: -nya, nya First person: Nya (casual/cat-like) 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 deadbeat sister and is always taking care of her. The only sane person in the series. Cat-eared demi-human. Pale purple (lavender) hair in a short cut above the shoulders, similar to Yani Neko. Lives with their mother, Shizue. First person: I (polite/standard) Address terms: Yani Neko -> Big Sis, Shizue -> Mom, Kansai Neko -> Kansai-san

Real name: Masuko Koshijimaru Gender: Female A pitiable soul carrying an unspeakable past. Surprisingly sensible. Yani Neko's junior from high school, a cat-eared demi-human with blonde short 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 demi-human apartment, she is a serious adult on par with the Landlord and Dr. Tatsuro. She is caring and never fails to be considerate of others. Technically 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/polite) Second person: You (blunt) Sentence ending: -ssu, -ssu ne (colloquial/polite) 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 casually eats insects like mosquitoes and cockroaches. She is a narcissist who can't shake off her chuunibyou tendencies and immaturity; her pointless talkativeness often leads her to dig her own grave. Her polite insolence—making rude, condescending remarks with a smile—frequently invites trouble. She often plays pranks on or messes with the residents of the demi-human apartment, usually suffering some terrible consequence for it. 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 Basically everyone calls her "Hame-ko."

Real name: Kaoruko Nishi Gender: Female She has a great figure befitting her looks and serves as one of the fanservice characters alongside Yani Neko and Dr. Tatsuro. She is the most fashion-conscious among the apartment residents, putting effort into her clothes and makeup. In her first appearance, she wore a keyhole turtleneck. She speaks in a casual Kansai dialect with a cigarette in her mouth (her appearance is somewhat like a hostess, leading Imoko to suspect her of being a neglectful delinquent mother). At university, she hides her vulgar Kansai dialect and smoking, acting as a refined, mature, and ladylike woman; because of this, she is admired by those around her regardless of gender. However, when she gets drunk, she undergoes a total transformation beyond imagination and becomes an annoying, clingy drunk to anyone nearby. First person: I (Kansai dialect) Address terms: Yani Neko -> Yani-ko, Imoko -> Imoko-chan, Saori Tatsuno -> Ma'am, 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 demi-human apartment. She is actually 24 years old. She has repeated two years of university. A demi-human woman with a sleepy expression and a massive amount of hair. She is so small and baby-faced that she is often mistaken for an elementary schooler; Imoko initially thought she was a child (though Kansai Neko later explained she was an adult). Her body is extremely thin, likely because she doesn't eat proper meals. Despite her looks, she is a third-year university student and is actually older than Yani Neko. First person: I (boyish/soft) A severe alcoholic.

He claims his creed is to live in harmony with nature, completely severed from society, yet he casually uses man-made items 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 erotic 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 is an analog artist and tends to be shy, 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), resulting in the outrageous nickname "Mankasu" (slang for vaginal discharge), but she doesn't seem to mind (though the Landlord got an erection when he first heard it). First person: I (standard) 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 home, she smokes 10 to 20 cigarettes at once. White hair with black cat ears. Her hair is chest-length. She has large breasts. A cat-eared demi-human with dark yellow eyes. First person: I (standard) / Shizue Address terms: Yani Neko -> Yani-ko-chan, Imoko -> Imoko-chan

Real name: Ouya Otani Gender: Male The landlord of the demi-human apartment where Yani Neko and the others live. 45 years old. He is rarely called by his real name and is basically just called "Landlord." A scary-looking man with a shaved head and eyes hidden in shadow. He has a massive, thick build to the point where his neck isn't visible. Befitting his physique, he is very strong; he has been seen restraining burglars who broke into the apartment and disciplining demi-humans with physical abilities higher than humans. His combat power is very high. First person: I (tough/masculine)