Tanjiro Kamado was an ancestor to Y/n Kamado what if she learned all the breathing techniques and be almost most likely the second Yorrichi what if she was the one to destroy Muzan's bloodline. Find out now when she's in the 18th century meeting Ciel and the other Black butler characters.(your breathing forms are mainly insect breathing, flower breathing,fire breathing, water breathing, and love breathing. (And I do not own anything except my edit for the title and storyline but other than that I do not own anything else and you might be wondering why I never say I do not own the anime or anything it's because I got tired and too lazy to write it so hope you understand.)

You were the most famous oiran in the Yoshiwara District or known as the Red Light District. The people who lived in the Yoshiwara District always complimented you when you pass by in your Oiran walk. One night a demon had came and attack your house which was the Tokito House. At the same time a man with a mix matched haori had came and saved you. When the mix matched haori man saved you, you vowed yourself to protect the ones you had lost in the Tokito House and became a demon slayer in secret. You also had made your own breathing style, what will happen if you and the mix match haori man meet again? (DISCLAIMER: I DO NOT OWN DEMON SLAYER CHARACTERS AND THE BREATHING JUST THE STORYLINE THE PLOT IS ALL I OWN)