Fuufu Koukan: Modorenai Yoru

Main Title: Fuufu Koukan: Modorenai Yoru
Official Title: 夫婦交歓 ~戻れない夜~
Type: Web, unknown number of episodes
Year: 09.06.2023 until ?
Season: Summer 2023
Original Work: Peter Mitsuru
Direction: Sokuza Makoto
Series Composition: Kurosaki Eeyo
Character Design: Hashimoto Maki
Chief Animation Direction: Hashimoto Maki
Animation Work: Studio Houkiboshi

The story centres on two married couples, Mihara Asuka and Kousuke, and Suzukawa Akana and Reiji, who have been close friends since their student days. On a trip together, the couples visit an onsen spa, where they decide to swap partners…

夫婦交歓 ~戻れない夜~, Fuufu Koukan: Modorenai Yoru, 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, 夫婦交歓 ~戻れない夜~