Tairaku is a lucky man. He has a comfortable job teaching at a local high school. He has Satsuki, a fellow teacher whom he hopes to marry someday. He has Aya, a beautiful student who has fallen in love with him. He has Aya's father, a wealthy man who wants so much for his little girl to be happy that he has sent her to live with Tairaku. Tairaku is a very lucky man.

As Tairaku's task begins to appear impossible, Tairaku must not only restrain himself, but also protect Aya from the hordes of men and women at school.