Ghost Exorcist Prequel: the Iron Mask

Deportation, shelter, execution... In the shadow of the city, the deadly battle between ghost exorcists and monsters has been going on for thousands of years. Swords, guns, swords and halberds intertwined with fangs and claws, and blood was spilled in the long river of history. The strongest ghost exorcist "Iron Mask", everyone knows his name, every ghost is afraid of his existence, but no one knows that he puts on "Iron Mask" just because he wants a girl to come back.