(In this story Y/N is a female named Maiko) Maiko lives with her grandfather since her parents were killed by a demon. her grandfather (a retired Hashira) requires a lot of help. One day tragedy strikes in the form of two Upper Moon demons! It's a good thing she has her grandfather's old katana... and no experience using one... This may not be the most accurate fanfic ever but it's pretty wholesome. Hope you enjoy! (Btw, I know this is the same story as on that other account. That was my cringe old account that I'm no longer using)