Hoshino was traumatized by the fact that the perpetrator he caught in a decoy investigation in the past was falsely accused, but he decides to become a decoy in order to overcome his past self. He disguises himself and rides the same train every day, but is preyed by perverted bastards and gang-raped in tangles, and becomes an outlet for the sexual desires of the molesters! Divided into a walleye, a photographer, and a molester, he becomes a clever surround molester using aphrodisiacs! Freedom is taken away in a closed space (train), restrained, deep throated, gang rape... cruel activities are carried out...