Chikan densha: Yumeyubi de shirimeguri

Original title: 痴漢電車　夢指で尻めぐり

Directed by Yoshikazu Katō

One summer day, high school student Keito, recently widowed Na, and the couple Takeshi and Raika are on a crowded train, engaging in a sexual harassment game. Soon, the harassers' hands close in on Keito and Na…