Mayu, a female college student, is a little too obedient, perhaps because her family was raised too carefully as a celebrity daughter of a conglomerate. Since the university she attends has a long history, her parents won't get any bad bugs, so she allows her to live alone. However, her eyebrows had a boyfriend named Kawasaki. Kawasaki is actually a candidate for a member of a gang, and was approaching Mayu under orders from her older brother. Mayu is caught in a skillful trap set by Kawasaki, and she becomes a 'superior delivery' to the yakuza bosses who appear one after another, and she is corrupted.
