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Akari and her boyfriend Hiroshi take part in a part-time university experiment: "Happy couples of five years or more become jailors and prisoners. Just how will it change them mentally?". While all five couples started out well, they get swallowed up by the strange prison-like atmosphere. Under the pretext of punishment, the male jailors start sexually assaulting the female prisoners! What will become of Akari and Hiroshi!?
College freshman Tada Banri has a very questionable past. Eager to make a fresh start, Banri enrolls in an elite Tokyo law school and soon befriends fellow freshman Yanagisawa Mitsuo--but it appears his new pal has some baggage of his own.? Her name is Kaga Kouko, another new student, who slaps Mitsuo across the face with a bouquet of roses. Just who is this intimidating beauty and what is her connection to Mitsuo? And what does this all mean for Banri's dreams of a blissfull college life?