Couple's sexual intercourse, NTR (Netorare) and the frenzied NTR of a certain couple's ejaculation record GENU-004

Nakazawa married Sumire, who was a year younger than him, after an office romance. He and his young and lovely wife enjoyed a happy newlywed life, but one problem arose: their sex life wasn't going well… Then, he happened to meet Ikeda, his former boss. While discussing their current situations, they started talking about their sex lives, and Nakazawa sought advice about his unsatisfactory relationship with his wife. Then, Ikeda asked if he would be willing to exchange his wife, Rui, for Sumire…