(back a few episodes in demon slayer when master Kagya was about to die from muzan, we're changing the story) You were the legendary vampire hashira the second hashira who died with Yoriichi your grave was next to Yoriichi, when kagya's house blowed up it disturbed Your grave and suddenly you appear in kagya's house saving kagya and his wife and kids and drive muzan away

And the next day your grave was dug up and you weren't in it or anywhere you're just like gymei blind and strong but you were stronger and you were unpredictable