Oraku is a lucky man. He has a comfortable job teaching, Satsuki, a fellow teacher whom he hopes to marry and Aya, a beautiful student who has fallen in love with him. Aya loves nothing more than to come on to Oraku, and lounge around his apartment in scant attire. Unfortunately, Aya's father happens to be a major crime boss, and he will have the hapless teacher slowly murdered if Aya doesn't remain pure. Not only must Oraku restrain himself, but also protect her from the hordes of men and women at school who'd love to get their hands on her body. Of course, if Satsuki or any of the other teachers discover Oraku's new living arrangements, he will be permanently dismissed from the teaching profession. Oraku is so very lucky.