Mr. Ayase, a married woman who looks good in a short bob full of cleanliness. Even now, she and her husband are so good friends that they have night activities. But what she can't forget is sex with her ex-boyfriend, who she was dating before marriage, which was the most pleasant thing she had ever had. Of course, she keeps it a secret from her husband, but she seems to remember her ex-boyfriend even during normal sex. However, he thought that it was not good to drag it out like this, so he volunteered to appear in order to overwrite his pleasure and get rid of his ex-boyfriend.