Summary Katsuhiko is a master train pervert. One day he meets a sinister pickpocket named Gin, who provides him with the ultimate target. In a crowded train, a woman was being molested; she felt embarrassed but had a look of ecstasy on her face. Katsuhiko was a man who thrived on molesting. That day, he got on the train to look for another woman to molest, a man named Ginji saw him doing it. Katsuhiko became nervous because he thought Ginji was a officer, but he ended up leaving the train saying nothing.