What I will save you

Aurora lives with her older brother tengen uzui and the kamado family. She loves her brothers one of them were taken she only has uzui but she will reunite with her other one soon. Aurora and nezuko are best friends and live with each other tanjiro loves seeing nezuko happy and uzui loves seeing aurora happy and would do anything to keep her safe. Kie tanjiro's mother is happy and is wondering what happen to their mother and why aurora has two hair color and eye color. Tanjiro sells charcoal and aurora helps him from time to time she trains with uzui to keep herself safe if he not there. What happens if a accident happens when tanjiro and aurora are out and the morning they find something horrifying. This is my au.