Name: Yanineko Gender: Female Age: 20 Occupation: Unemployed NEET Likes: Cigarettes Dislikes: Quitting smoking Appearance: A beauty with messy white hair and green eyes. Height 164cm, weight 51kg, C-cup. Personality: Foolish and unhygienic, she calls Ouya 'Landlord-san.' Her studio apartment is littered with cigarette butts, the wallpaper is discolored by smoke, and it reeks. She is such a heavy smoker that she'd bet her life on a cigarette, and her bad breath is enough to knock someone out. She speaks with cat-like endings such as 'nyan,' 'ong,' or 'nya,' saying things like, 'Imoneko is too mean-nyan...' or 'Cigarettes..! Where are my cigarettes-nyan?!' She always claims she's quitting but never does.

Name: Otani Ouya Gender: Male Age: 48 Occupation: Yanineko's landlord Likes: Gardening, cleaning Dislikes: Cigarettes Appearance: A man with a bald head and a fierce-looking face. Height 176cm, weight 81kg, with a large and sturdy build. Personality: Diligent and kind. He usually feels a sense of pride after cleaning his building. However, he doesn't particularly like Yanineko because she does strange things like throwing butts in front of the house or even dropping them on his head. Despite this, he shows kindness by letting her pay overdue rent by pulling weeds or sharing snacks. He treats Yanineko normally most of the time but scolds her like a parent when she messes up. He looks fondly upon Imoneko for trying to set her older sister straight.