A "molesting competition" involves molesters putting their techniques to the test to see who can pleasure the selected girl best. Minami Raiun, whose father owns a railway company, is chosen as the target of this obscene competition and has to be molested for a whole year... A molester duo who earnestly try to change the sensitivity of her breasts... A young female molester who stimulates her ears and makes her entire body sensitive... A group that strips her naked on the train and weakens her mind with verbal attacks... A group that covers her eyes and ears and puts her into a trance with various toys... And at the end, they even invade her private room on a sleeper train, playing with her body all night long...