Gakuen no Ikenie: Nagusami Mono to Kashita Kyonyuu Furyou Shoujo ~Hakudaku ni Okasareru Kasshoku & Daniku no Kyouen~ THE ANIMATION

Based on the adult game by Erectlip. A priest kidnaps a girl and wants her to abandon her friends and join his religious cult. When she refuses, the cult members administer divine punishment by nipple-fucking her. Her friend comes in to save her, but gets ass-fucked instead. (Source: Hentai Haven)