After her husband passed away, Eriko Hiraoka lived alone. Two years later, her daughter and son-in-law returned home for a visit. Though they initially coexisted peacefully, the son-in-law grew dissatisfied with their bland sex life. One night, while he was heading to the bathroom, he heard a noise. Peeking in, he saw Eriko masturbating. Overcome with excitement, he pressured his wife for sex. However, she refused, citing their young child. His frustration mounted. The next day, while his wife slept, the son-in-law took advantage of Eriko. "Don't you want this too, mother-in-law?" he asked, his advances initially met with resistance. But gradually, she began to give in...
