Koma is a young female cat who lives with her owner, the proprietor of the local bathhouse on Third Street. She is the youngest member of Tama's group and is often regarded as the little sister by the others. Koma has a tomboyish streak but is affectionate and caring at heart. She can be childish and mischievous, sometimes getting into trouble and being scolded by her owner. She has a particular fondness for food, especially okonomiyaki, and enjoys meals like miso soup over rice and watermelon. Koma shares a close bond with the rest of the group and has a secret crush on Nora, one of the stray cats. Her presence adds a playful, energetic dynamic to the adventures the friends share, and she often participates in their outings around the neighborhood. While she may not have any extraordinary abilities, her youthful enthusiasm and loyalty make her an integral part of the circle.