The star of a team of teenage crime fighters falls for the alluring villainess she must bring to justice.

Young Haru rescues a cat from being run over, but soon learns it's no ordinary feline; it happens to be the Prince of the Cats.

Mitsuki and Yuya become stepsister and stepbrother because of their parents' marriage. Mitsuki can't get along with her new family and Yuya doesn't know how to approach his new stepsister. One day, Mitsuki becomes possessed by the spirit of Hiyori. Hiyori likes Yuya and believes Yuya can help her get to heaven. Hiyori places a leather chastity belt upon on Mitsuki and a plan takes place to help send Hiyori to heaven.

Schoolgirl Kuniko is kidnapped by a middle-aged man Iwazono when she is jogging. He tells her that he had a failed marriage which leaves him a deep and everlasting scar in his mind. He kidnaps her in search of a perfect marriage and intends to lock her in the room and 'educate' her to perform perfect sex where body and soul are united.

Based on the popular Internet novel, the film takes place in a school renowned for its sexual aberrations. The student body is comprised of sexually ambiguous teenagers, and the student president and vice-present flaunt their taste for S&M. Independent study and supplementary classes are done on homosexuality and transgenderism. But amidst this environment, there are some that just can't adapt.

Michiko a high school girl had committed suicide, but she was resuscitated by an alien parasitism. While she brutally murdered men and spawned one after another, her friend Rika met Mayumi. Mayumi was told that she was parasitized by a gentle alien. They decided to fight Michiko.