Tsumugi Akari began dating Mitsuhiko, whom she met while working part-time. Mitsuhiko invites Akari to her house to make her debut with his father. But it seems that the godfather was fascinated by the beauty of his future bride, so he borrowed the excuse of consulting Akari on some issues and asked her for help while his son was already working. And there he suddenly raped Akari, no matter how hard she tried to resist, gradually the sex made them both feel satisfied, he made Akari happier when he had sex with his lover, so the two of them were constantly cheating on each other without his knowledge.