Sakurai was able to successfully complete an important company project. - In order to wish each other well, my colleague Kazama and I decided to have a drink at Kazama's nearby house, but... - After drinking heavily, the two get into an argument over trivial matters. - The situation is settled somehow, but Sakurai, who is jealous of Kazama who is married to his big-breasted wife Yumi, goes crazy with jealousy and asks Yumi to have sex with him at night...