Kazuo, the husband, is nervous when his wife's college friend Hitomi comes to stay for work. He has known about Hitomi for a while and has been waiting for a chance to cheat on her. Then, his wife Miyako has to go back to her parents' house because her father accidentally gets injured. "It may be inappropriate, but I'm lucky! I'll be alone with Hitomi until my wife comes back!" Kazuo's excitement rises and he pushes Hitomi down...