Kyosuke began to leave the body of his sister-in-law, Yuna, as desired by the suggestion of mother-in-law and Megumi. Kyosuke tries to have sex with Yuna, but somehow dislikes virgin loss. But Yuna says she can do anything except sex. So Kyosuke forces Yuna to perform various plays. Word blame, shame blame, service play, punishment play, and anal sex. Yuna gradually transforms into an M slave in all kinds of play. And what does the work left behind by his late father who was a painter mean...!?