"Groper Train" pink film distributed by Okura Eiga.

"Groper Train" pink film distributed by Shintoho.

Yoko is an office worker at a small transport company. The driver, Shuji, has feelings for her, but Yoko has no desire to fall in love with a man. Yoko pretends to be plain at work, but at night she sometimes puts on makeup and goes to hotels with men. However, she only sleeps with each man once. It was just an act to satisfy her lust. Then she receives a strange phone call, and finds out that someone is always watching her. Who could it be?

Three years have passed since Sonoyama married Akiko. Akiko was a virgin, but she was trained by Sonoyama and has now become a ripe woman. Sonoyama has a strong sexual desire and has another mistress named Michiko. One night, he goes to a swapping party at Michiko's urging, and they exchange partners and indulge in an affair, pretending to be married. However, a year later, the couple moves in next door...