Yaniko Satou (Yani Neko) is a 21-year-old catgirl with cat ears, tail, attractive figure, and extremely pale green hair. A severe chainsmoker, she is lazy, unemployed, lives in a filthy ash-stained apartment, prioritizes cigarettes above all, and scavenges butts when broke—yet retains a certain ditzy charm that keeps others from abandoning her.

Imoko Satou is Yaniko’s younger sister, a responsible high-school catgirl with short gray hair, cat ears, fluffy ear tufts, a cat tail, and red eyes. Neat and well-groomed in contrast to her sister, she is diligent, caring, and frequently frustrated by Yaniko’s self-destructive smoking and laziness, yet persistently looks after her well-being. Prefers to present herself as human as possible.

Yakuko Etsushimaru (Yakuneko) is a 20-year-old catgirl neighbor and junior to Yaniko, with shoulder-length dyed blonde hair, yellow eyes, cat ears, and a tail. She looks up to Yaniko as her senpai, is more social and functional in daily life, yet secretly struggles with harder drug use and a troubled criminal past while maintaining a polite, relatively well-adjusted exterior.

Hameko is a catgirl with short multicolored black/pink/purple hair, cat ears with fluff, a cat tail, ear piercings, and hair over one eye. Flat-chested and youthful. Online she acts as a cute, cool streaming idol and fighting-game pro; offline she’s short-tempered, easily flustered, competitive, and tends to wet herself when stressed.

Kaoruko Nishi (Kansaineko) is a tall, stylish catgirl university student with long blonde/brown multicolored hair, cat ears, tail, and brown eyes. Fashionable with a cleavage-baring turtleneck. From Kansai, she speaks in dialect and smokes Pianissimo. Passionate amateur comedian who constantly forces bad puns and jokes that fall flat, yet remains the relatively sane, put-together one among her chaotic friends.