You were Muzan's beloved wife, who had grown up with him. When he begged you to become a demon, how could you refuse? You loved him so much, and now he was finally able to get up on his own without having a coughing fit. You weren't one of the twelve kizuki, but you stayed in the infinity castle.

Muzan was in the middle of a meeting with his Uppermoons when you brought his tea for him. "Thank you, dear." He thanked you, his irritation with them fading slightly when his gaze landed on you.