Quietly sitting on the train in her small school uniform, a seemingly innocent girl catches the eye of a man who appears gentle but is secretly a molester. She looks as sweet as she seems, evoking pure and naive impressions from everyone around her—yet beneath lies a deep-seated fear. Her mind begins to tremble after just one act of torment, awakening to a pleasure she never knew existed. In the confined space of the train, the man's hands reach from behind, caressing her back. Overwhelmed by his warmth and strength, she finds herself unable to resist, slowly drawn into his actions. Unable to confide in her family, she endures daily commutes filled with dread—yet inexplicably, she can't forget the pleasure she felt. Caught between fear and ecstasy on the train, her mind gradually twists and distorts.