Fuufu Koukan: Modorenai Yoru
English title: Married Couple Swap
Japanese title: 夫婦交歓 ~戻れない夜~
Alternative titles: Marriage Exchange: The Night of No Return, Marriage Exchange: Amazing Extramarital Sex Compared to My Husband, Married Couple Swap: He's Better Than My Husband
Type: ONA
Source: Manga
Episodes: 8
Status: Finished Airing
Aired: Jul 2, 2023 to Sep 2, 2023
Duration: 6 min per ep
Rating: Rx - Hentai
Studios: Studio Hokiboshi
Producers: Suiseisha
Genres: Hentai

Reiji and his wife joined their friends on a getaway to a traditional Japanese inn, hoping to conceive a child. However, their plans took an unexpected turn when Reiji was seduced by his friend's wife, while his own wife engaged in a passionate affair with their mutual friend. Amidst forbidden desires and the thrill of pushing boundaries, the four of them delved deeper into temptation. As they surrendered to their carnal passions, could they ever reclaim the innocence of their marriages? 

(Source: Coolmic.me)