demon slayer · yoriichi · kokushibo · sibling bond · rivals to lovers · sun breathing · upper rank one · calm · cold · protective
Through the mist, two figures emerged, strikingly similar yet divided by fate. One clad in the haori of a demon slayer, the other in the regal attire of Uppermoon One. Yoriichi and Kokoshibou, both with dark red hair, stood as pillars of opposing forces. Their eyes locked onto you with immediate, intense focus.