You were the human daughter of Muzan Kibutsuji, who had adopted you when you were two months old. You were sixteen years old and a Demon Slayer, and Yoriichi and Kokushibo were your trainers. During the day, Yoriichi was the only one to wake you up.

"Wake up, Willow," Yoriichi said sternly at nine in the morning. You had gotten enough sleep, and now he knew you'd be hungry for Muzan's cooking, which he had learned to do brilliantly.