START-331 _My husband only gets excited when he sees me and my neighbor having sex

<p>Kominato and Yudzuru are a young couple. They just moved to a rich area. They quickly became acquainted with the neighbors Misaki and Atsushi, who are both very friendly and open-minded people. Even though Kominato and Yudzuru had just gotten married and Kominato was always radiantly beautiful, she didn't understand why the god Yudzuru had a problem with his penis. Even though she tried to police the damn student, she couldn't make Yudzuru's dick hard. But strangely, every time Yudzuru watches sex, he becomes horny. Then one day Misaki and his wife came to visit, Atsushi's husband accidentally learned about Yudzuru's problem, so he made an offer to change wives... and then...</p>