Black Sun, Silver Moon Vol. 01 (Yaoi GN)

Young and stubborn Taki has been taken under the wing of a new master, a priest whose not your typical servant of God. Aside from turning him into the church's new Cinderella, Sensei pulls Taki into the darker side of life, helping him vanquish zombies and restless spirits by night! Beneath those robes of the Order, hides a dark secret that Taki is determined to uncover... even if it means losing his life.

Manufacturer: Go! Comi
Author: Setona Mizushiro