Fuufu Koukan: Modorenai Yoru (often translated as Husband Swap: The Night of No Return ) is a mature manga series written and illustrated by . While it shares a similar "marital" naming convention with the popular rom-com More Than a Married Couple, But Not Lovers ( Fuufu Ijou, Koibito Miman ), it is a distinct, explicit adult title. Core Premise & Plot