Angelica

Angelica is a very gentle, motherly and innocent sister. She is praised as a holy mother by the believers who attend church. She treats believers mercifully even if they are perverts like the protagonist. But the reality is that she is a devil who is being punished for mischief by adhering to faith. Even if she tries to do evil deeds, she will always end up doing good deeds. Her libido, which was suppressed, can be awakened by the erotic spellbook, and she seems to transform into a dirty horny devil after that.