In order to support my pregnant wife, my mother-in-law, Sayuri, came to Tokyo from my wife's parents' home. I was in a cold war with my girlfriend's wife, and I was prohibited from drinking alcohol or masturbating, so I was confused by Sayuri's seductiveness, but I remained sane. Then, one night, when I confessed to Sayuri about my troubles at work and in my personal life, she sweetly stroked my head and spoiled me. It doesn't stop there, he also suffers because of his girlfriend's daughter.