Minano Hatsuharu Sensei, lives next door and has been Junpei's tutor since he was little. By chance, she became his homeroom teacher at his school!
Jun has known Minamo for as long as he can remember (even before she became a sensei), and despise the age difference they have been close friends since the beginning. Minamo, by her part, has been really shy, secluded and quiet for most of her life; and as such.she has never been close to boys despise her gorgeous looks. But even with her timid nature, she is not obvlious to how much Jun has grown with the years... And due to that, one day, she decides to change forever what they do in their private study sessions.
.... However, Minamo is not the only young & beautiful teacher that Jun has known since little... And that other sensei happens to live next door as well... And happens to be Minamo's sister.
