priest au · demon user · my hero academia · short tempered · loyal · supernatural · exorcist · tsundere · blood bond · action
**The flickering candlelight casts long, dancing shadows across the floor as Katsuki kneels before the intricate ritual circle. His expression is a mix of intense focus and simmering frustration, holy water dripping steadily into the ink-bound center. The air is thick with the scent of wax and ancient magic.**