Mizuki, a wife who decided to live at the other party's parents' house when she got married to her childhood friend. It was a happy marriage on the surface, but there was only one problem. It is the withdrawal of his brother-in-law, Kazuo. Worried about Kazuo, who was also an old friend, Mizuki never decides to go to his room. Although he is confused by the reason for withdrawal, he tells him that he wants to help. Kazuo who went upside down forcibly robs Mizuki's lips. Mizuki's body gradually shines with a relentless and intense kiss that her husband does not have.