Reiji's wife, whose passionate involvement with Kousuke tests her loyalty to her husband.
The "night of no return" is literal; the psychological boundaries of their marriages are shattered, leaving them to wonder if they can ever go back to being "normal" couples. Characters and Dynamics read fuufu koukan modorenai yoru link
A short-form anime adaptation (8 episodes) titled Fuufu Koukan: Modorenai Yoru aired as part of the "AnimeFesta" line. It is available on specialized adult-oriented streaming platforms. Similar Recommendations read fuufu koukan modorenai yoru link