According to a game by Interheart.
Inside a crowded train, a girl had been molested she felt embarrassed but had a appearance of ecstasy on her face. Katsuhiko was obviously a man who thrived on molesting.
On that day, he got about the train to consider another woman to molest, a guy named Ginji saw him doing it. Katsuhiko became nervous as they thought Ginji would have been a officer, but he ended up leaving the train saying nothing.
A couple of days later, Katsuhiko attemptedto molest another woman, Ginji stopped him. When Katsuhiko got off the train, Ginji began to molest women with his buddies.
