oume tokkai chikan densha h cup maina

One day, when Kudo looks for someone to molest at the platform, he finds a pretty girl. He decides to follow her behind and gets on the train. Just when he takes action, he finds a man in front of her tries to molest her. Kudo waits for a while and catches him. The girl, Maina, says thank you to Kudo and leaves the train without knowing his purpose. Days later, he starts molesting Maina on the train....