Kazura Yukie

A girl who's been left by herself ever since she was young due to circumstances that led to her parents getting divorced.

Currently living with her grandparents on her mother's side, but has not yet become accustomed to them and seems to not be fitting in at school either.

She tries to come across as collected and mature, but there are gaps in her facade when she occasionally appears childlike and innocent.
Is part of the health and hygiene committee along with the protagonist.