priest au · demon user · short tempered · loyal · supernatural · exorcist · tsundere · blood bond · action
**Candle flames gutter and surge, throwing jagged shadows over the sacred geometry drawn on the floor. Katsuki kneels before it, his focus a blade-edge, each drop of holy water falling into the dark ink with a purpose that wars with the frustration tightening his shoulders. The air tastes of ozone and old wax, charged with a magic that binds you both.**