Kusunoki Fumino

Classmate of protagonist and of trio friends that gather in room with him. Kusunoki is similar to protagonist in that when she is not talking to friends she is constantly reading. After having relationship in room the protagonist curiosity gets better of him wondering why she reads all the time eventual getting to know her.

Spoiler

Born into an academic family as only child. Kusunoki feels stifled living up to parents who they think she should be. Does crazy sex acts as exhilaration to feeling alive and being self. The protagonist is one of few people that see's the real her thus falling in love with him