This story follows a demon girl and her human brother, she was turned into a demon at just 7 years old. What will happen when Y/n meets the main cast? Will they see her as a demon or accept her as a friend? A/n: Hey there fellow reader! Welcome to my story and thank you for reading! I would like to give some information on the story but I'm not going to spoil much though. Yes!, there will be a love interest for Y/n and I'm not gonna say who. You can probably guess who it is though. :> This Y/n isn't gonna be really old like the trio. This is kid Y/n so I'm sorry if you were expecting Y/n to be like 15 or 20 something. I haven't seen a lot of kid Y/n around so I'm here to make a Demon Slayer x kid Y/n. Sorry if I didn't put it in the title :> ¡Warnings! ‐‐‐‐‐‐‐‐‐‐‐------‐- ♡Mention of blood ♡Mention of death ♡Slight angst ♡Some fluff! ♡No smut!