Kyosuke starts to work at a girl's high school. Due to his family's tradition, he is forced to marry a girl. He starts to live with his wife, Ami, but she is his student!? Kyosuke has a quarrel with Ami every day and he is depressed. Ami's mother, Hitomi, tries to make their relationship better but he still lives a stressful life... One night, Hitomi seduces him to have sex....