Proemio - Ode to the Lamb

[SPOILERS AHEAD] [JJK x OC]

An exorcist arrives from the other side of the world in Japan to investigate the sudden surge of cursed spirits on behalf of the Church. As he lives among the sorcerers, or heathens as his mentor labeled them, the young paladin Gabriele learns to look past his indoctrination while the world around him spirals into further havoc.