School of Darkness

Yuko got an abusive ex-boyfriend, Taki. After a horrible incident, Yuko seeks out Ayano, her best friend and lesbian lover. Ayano invites Yuko to give her a comfort sex.After that... Ayano is starting a new research project, and as part of her project she possesses an ancient scroll, a mummified body part, and a dagger. Yuko offers to help her with her research by doing a biological analysis on the mummified part. Several days later, Yuko endures another traumatic encounter with Taki. After forcing himself on Yuko, he commits an unimaginable act, leading to awakening of a sex devil and Yuko got possessed by the evil entity until one time she got her revenge on Taki unleashing a powerful beast with a body of a sexy maiden.