Hoshino was traumatized by the fact that the criminal caught in the sting operation in the past was falsely accused, but decided to become a decoy in order to overcome himself in the past. A decoy investigator who disguises himself and rides on the same train every day, but is preyed on by metamorphosis guys and is circled by stubborn ● Slut ● Devil’s sexual desire outlet! Cover, shooter, filthy ● For the prey of clever enclosing lewdness using aphrodisiacs divided into teachers! Deprived of freedom in a closed space (train), restrained, deep throating, ring ●… The devil’s work is done….