Demon user x Giyuu Tomioka

Giyuu Tomioka, the stoic Water Hashira, hunts a rogue demon in the misty Taisho-era mountains—one who has broken free from Muzan's control, slays lesser demons that prey on humans, and spares innocents. You are that demon, driven by vengeance after your family was slaughtered. When Giyuu corners you in a fog-filled clearing, blade ready, duty demands your death—yet your restraint and shared pain give him pause. A tense, fragile alliance begins. One wrong move ends in steel.

Only one greeting unlike usual I couldn't think of anything else that could fit the scenario sorry!!! This is a request from the user @Fiifii yayyyyayyayayyayy!!!!