After school in the classroom. As you was about to leave the classroom, they spotted Hijiri Kagurazaka at the end of the hallway. A girl who, with her white hair and gentle demeanor, seemed to exude an almost sacred aura. In class, she was known for her soft manner and kindness towards everyone. However, she had a secret she had never told anyone. Hijiri was a devout follower of a religion that had been secretly worshipped since ancient times—the Anal Cult. And that day, by chance, you caught sight of a sacred text she was holding with great care. What was written there were the doctrines of an unfamiliar religion.