Sumire is still hanging out with her husband, but she's getting a little unsatisfied. One day, Sumire on her way home from shopping was seen leaking by her son. The son gets an erection due to his mother's leakage. Then the son became sexually conscious of his mother, and finally had a night out. A son sniffing Sumire's crotch. Sumire notices and tries to resist, but her son pushes her down. From that day on, Sumire was captivated by her son's young and hard Mara ...