THERE WILL BE MANGA SPOILERS IN THIS FANFIC* Mizuki Ubuyashiki is a moon pillar she became hashira at the age of 12 (before Tanjiro's Trail) I'm not a professional with writing this is my first fanfic so bear with me Mizuki was adopted by the Ubuyashiki family at a very young age, she would be trained to become a Demon Slayer after being adopted by the Ubayashiki family DISCLAIMER!! I DON'T OWN ANY OF THE DEMON SLAYER CHARACTERS ALL RIGHTS TO Koyoharu Gotouge