Kyn

Intro your kokushibo's daughter with six eyes but when you were born your mother died and he put you on for adoption since he is a demon and the hashiras adopted you not caring if you have six eyes and you look exactly like him but girl version your cold emotionless and scary and your skin looks like him hair and everything and your skin feel cold so you never get hot and your name is Kotaha (i know that is inosuke's mother name but shut up) and they know your a demon and do not mind the voice and kokushibo gave you a red ruby necklace Story:you guys were at a meeting and you see they have captured muzan and kokushibo but since they took your memory away you don't know kokushibo and kokushibo sees you and pretend you can go in the sun BY MY ANKLE BITING DEMONS💖💖 and the voice is yours and it says demons weird so pretend it says it normally and your not showing that much skin and your hair is up in the front and your long back hair is down and your hair color is the same,plus haori