Ogura Yuka is a high school first-year student who is very popular with the boys. His mother left him while he was very young, and ended up being raised by his grandmother, who was hospitalized after suffering from a stroke. After this he finds himself living alone in his house, with a pervert for a next door neighbor that is soon discovered to be his math teacher in Yuka's new high school.
Yuka is very attractive to boys around him, what makes him be bullied by the other girls in his school, especially after the teacher starts to show interest on him. He doesn't mind that, though, because he's been suffering from that for such a long time that this doesn't bother him anymore.
Due to his cuteness and attractiveness, a teacher from junior high school attempted to commit suicide after writing his feelings for Yuka. The boy himself, though, is said to never have fallen in love with anyone before, and is very naive towards everything concerning spiritual or physical love.