Shima Chiharu

The protagonist's homeroom teacher. Full of an adult's charm, she has very big boobs and has hair as strong and supple like that of a cat, but she is very afraid of trouble. She doesn't mind the current situation of the girls around her, but is still emotionally conflicted about her being unmarried. While the other teachers are opposed to bringing an infant to the school, she holds the opposite view and helps cover up for the protagonist. But because she thinks looking after a baby is too troublesome, that job is given to the other heroines. Hates the adult way of the world, she is just a childish teacher. Sensible but hates trouble, she is this kind of teacher.