Tachibana Mina

A student of the main character. She is cheerful and energetic, and is the mood maker of the class.

She likes to talk about entertainment and love, and although she talks about sex, she has no experience in such things. She is embarrassed if everyone thinks she's falling behind on such things.

She is a girl of her age, concerned about her very small breasts. However, just recently, a boy has confessed his interest in her.

She gets along well with Hikaru and Yurika, who are in the same class with her, and they always have girl talk during lunch break.