A Ritual With a Upside-down Cross (Mammon Angst)

Mammon is tired of his sin, tired of everything. So what does he do? He tries to do a ritual to make his life better. But when it backfires, he releases something far more evil then he could have imagined. but maybe this evil is exactly what he needed.

(an Obey Me x The Exorcist fanfic)

this book will have no ships and MC has left devildom a few months ago. So they won't be in the story. (P.S this book has references from The Exorcist and the Exorcist believer. but the references from exorcist believer will be very settle to prevent spoilers)

Enjoy!