Mitsuki meets with Otoya one last time to apologize before she leaves Japan for good... A dead bedroom. An open marriage. One wife's fling with a male escort, and her husband's erectile dysfunction. Separation. After all the twists, turns, and heartache, will this couple finally discover what it will take For a Happy Marriage? Find out in the stirring, provocative conclusion!

Ichiko Aihara. Husband: Otoya Aihara. They have been married for seven years, and they get along well, but they are sexless and have no children, so they agree on the "permission of extramarital love (official affair)" system. Otoya has an "affair" named Mitsuki and Ichiko is aware of it. Looking at Otoya who is in the state of lovey-dovey with Mitsuki, Ichiko has begun to change, too... In this new series, the author of "Nikotama", Peko Watanabe tells a story of lies and truth in marriage. Whether or not you want to get married, we hope that the real life of this couple in their 30s can reach everyone who thinks about "marriage".

Faced with a dead bedroom in their 30s, married couple Ichiko and Otoya make the decision to open their marriage to other partners using an authorized cheating system. When Otoya’s girlfriend Mitsuki stabs him in retaliation for breaking off their relationship, Otoya is forced to come clean to Ichiko about everything, and they find themselves in a renewed honeymoon period. Yet Otoya is still plagued by Mitsuki’s parting words, manifesting itself in erectile dysfunction. While dealing with this issue, Otoya discovers Ichiko’s relationship with a male escort, and he retreats from their war of wars with a wounded heart, eventually ending up in a brothel that specializes in infant roleplay. There, he discusses his fears and insecurities due to his performance issues with a female escort. Meanwhile, Mitsuki and Shiro are plagued by their own insecurities as they prepare to welcome a new addition to their family. In the end, what did this authorized cheating system bring to everyone involved? And can these two married couples overcome the challenges ahead? Find out in the provocative series that’s taking the media world by storm!