Yuna, who has been married for several years and is worried about her relationship with her husband, participates in a class reunion for the first time in a long time. There, he reunites with his longing teacher, Ozawa ... They exchanged contact information and often consulted with her husband about his problems. One day, Yuna witnesses her husband and her cheating partner walking happily, and contacts Ozawa in a state of extreme melancholy. Ozawa gently hugged the grieving Yuna and kissed Yuna while feeling guilty. Yuna also entangles her legs in response to it and makes her sweaty body close to her.