The Torture Club (2014)

At Saint Honesty Gakuen, an exclusive private school, Yuzuki unwittingly stumbles into the unsettling world of the "Torture Club," an official after-school group shrouded in mystery. Captured by its members, she discovers that her secret idol, the charismatic Aoi, is part of this bizarre club. Intrigued and eager to be close to Aoi, Yuzuki contemplates joining, unaware of the dark and twisted activities that await her. As she navigates the club's sinister allure, she must confront the true nature of her idol and the consequences of her choices.