Six months ago, the shogi class I was looking forward to suddenly disappeared, and when I returned home earlier than planned, I witnessed my son's wife Mika, who lives with me, having sex with my son's friend. started from.She regretted what she had seen, but for the sake of her son, she made up her mind and questioned Mika.The daughter-in-law openly acknowledged her relationship and confessed to the inconsistency in her sex life with her son.She said that she would be her opponent because of her old bad habit... and I ended up having Mika.I was confused at first, but Mika wanted to act more positively than I thought, and I felt guilty about her son, but I was absorbed in having a woman named Mika.One night, I eavesdropped on her son holding Mika for the first time in a long time, and when I heard that her husband and wife were getting excited, I thought my role was over.