Y/n is a child who lives in a small town,his dream? Becoming a Hashira and protect his loved ones but one day,his town get attacked by demons,he soon turns a demon against his will and forget all about his childhood and her friend aswell She meets a lovely girl named mitsuri kanroji and fall in love with her (again) Muzan will do anything in his power to get Y/n to make him part of his army made by demons Will he succeed? Who knows