START-331 A perverted couple with a swapping hobby planted an NTR fetish in them! A pure and innocent commoner wife is lent to a rich couple and becomes immersed in immoral pleasures.

The Kominato couple, who have just moved, hit it off with the couple living next door in a luxurious mansion. Despite being newly married, the husband, Yuzuru, has erectile dysfunction and is sexless. When he is invited to swap partners by their neighbor,