Mari who entered the family with the husband of the same teacher. In a group of happy couples, she shook her face to the name her husband said. It is a former boss who raised himself as an educator when he was newly appointed, and a man who takes advantage of the weaknesses he had had in the past and uses himself as a comforter. Even if she refuses with her heart, her hand, who knows all about sensitive places, takes her to the climax. While feeling guilty about her husband, Mari is drowning in a pleasure class that she can't resist today ...