Chikan densha: Ecchina chijo ni goyōjin!

Fuyuki witnesses Chihiro, an office lady, being groped on the train. In the confusion, he also touches Chihiro's body, but warns the culprit, Tamura, but he claims that he is innocent. Then Naho, who claims to be a lawyer, appears and shows him a photo on her cell phone that shows evidence...