uematsu koboshi

This semi-sweet loudmouth has a crush on Kotarou and can't bear the thought of Misha encroaching on her territory. Koboshi is portrayed as an assertive character who deeply loves Kotarou but is too shy to confess her feelings. She cherishes her daily routine, from greeting Kotarou in the morning to chatting with him throughout the day, until Misha arrived. Every day, Koboshi adorns herself with cat-shaped ears, though they are not real or attached to her. She tends to get angry and becomes overly protective, leading to constant irritation with Misha's childish behavior and her attachment to "her Kotarou-chan".

Despite her frustrations, Koboshi remains a central figure in Kotarou's life, always looking out for him and ensuring that their daily interactions remain intact. Her strong emotions often lead to amusing yet tense situations between her and Misha, as both vie for Kotarou's attention.