Yoshioka went out for drinks after work with his colleague Takigawa. - Having not had enough to drink, the two decided to drink some more at Takigawa's house. - Yoshioka takes a liking to Takigawa's big-breasted wife Eri, who prepares drinks for him even though it's late at night. - However, perhaps because of his heavy drinking, he ends up getting into an argument with Takigawa over work. - The situation calmed down, but he was upset and went to have sex with Eri at night...