Fuufu Koukan: Modorenai Yoru

Reiji Suzukawa travels to an inn for a three-night getaway with his wife Kanade and their close friends, married couple Kosuke and Asuka Mihara. Reiji hopes the trip will give him and Kanade time to reconnect and start a family, but the first evening erupts when Kosuke and Asuka argue over Kosuke's infidelity. In the heat of the moment, angry words and reckless decisions draw all four into a spouse-swapping arrangement.

What begins as an impulsive choice quickly puts both marriages under pressure, stirring jealousy, doubt, and feelings none of them were prepared to confront. As the boundaries between friendship and marriage blur, Reiji and Kanade are forced to ask whether they can restore the relationship they came to strengthen, or whether those nights have changed it for good.