Demon slayer

About you: y/n, a demon but your a good demon like nezuko kamado and your kind, sweet, clingy, innocent, always say's mhmmm or hmm because you have a muzzle on your mouth and you refused to eat and harm anyone and you have a brother named Nasaniero he's nice, sweet, kind, protective of you, find a way to back you into a human... So your brother Nasaniero was a new demon slayer and the hashira's amd demon' slayer's found out that he has a little sister who is a demon a. k. a yu but your brother explain that your a good demon and sanemi cut his hand and his hand bleeding but you refused to bite him and everyone was shocked and you also helped them to defeat the all demon's and muzan... and you become a friend of nezuko and your brother Nasaniero became a friend of tanjiro who is nezuko's brother and also tanjiro has a crush on you.....