My Demon(2009)

“When a Demon grants your every wish, careful what you wish for, it just may come true.”

Overview

A young man unknowingly acquires a demon slave to grant his every wish. But every wish granted comes at a hefty price, a bit of his sanity and a bit of his soul. His only way to escape this curse is to give his final confession to a "conflicted confessor" who chooses their role.