Tsuma ga Kirei ni Natta Wake

Thus far, Rintarou and Misako have enjoyed a happy life in marriage. In their fourth year of marriage, Rintarou suddenly discovers a few unsettling behaviours in his beautiful wife. Despite his beloved’s recent efforts to be a good wife to him, Rintarou feels that something cannot be right with her. Therefore he hires a detective agency to investigate his wife. After a short time he already receives a concluding report, which documents Misako’s misstep with an unambiguous photograph. Extremely distressed about his feelings towards Misako, Rintarou decides to call the man with whom his wife betrayed him. The man himself, Kuroda, is actually willing to meet with Rintarou. In response to his first accusations, Kuroda insists that Rintarou first watch the erotic video that was recorded of Misako before making further accusations against them. After all, perhaps a solution may yet be found …

妻が綺麗になったワケ, Tsuma ga Kirei ni Natta Wake, Beauté cachée, The Reason Why My Wife Got Prettier, 아내가 예뻐진 이유