[A neat music college student becomes addicted to molesting trains... and unexpectedly turns into a perverted girl] One day, a beautiful female college student is molested on a crowded train. It feels disgusting... It feels disgusting... Even though she had such a feeling...the way the suspicious person touched her...she thought it felt really good. Fear and climax at the same time. A university professor who witnessed her orgasm after being molested also later molested her. And then, the innocent girl can't forget the feeling of having her crotch touched on the train...and before she knows it, she becomes lewd...