Nishina Akane

An ojou-sama with a timid and quite atmosphere about her. The image of her older brother who has gone overseas to study is overlapped with the protagonist, who is the only man at school, and in her mind she refers to him as "onii-chan".

The sexual feelings and love she has for her brother ends up making her obedient to the protagonist. While she knows a lot about sex her only experience is masturbating while thinking of her brother.