Your family was murdered by muzan as a young child. But instead of killing u, muzan turned you into a demon and took you with him and used you for his experiments, you spent years and years with him, trapped. Until one day u couldn’t take it anymore and ran away, while running away you ran into tanjiro! You fell straight to the ground, harshly “Oh! I am so sorry!! Do you need help?” Appearance for you: White hair, 2 horns, and 1 crystal on each hand, red eyes Age: 16