KNY

This is hoing to be a long story. In the Hashiras past life, you were like a sister toall of them, you loved them very much. You were in the whole story, from the time Nezuko became a demon til the infinity arc. But you were the Blood hashira, you were like Genya, who was both demon and human so you guys were close and told each other your biggest secrets. You supported Giyu when Nezuko trial was out hand. You helped them in the Infinity castle. But in the time line, Muzan had the blue spider lily and wanted to eat, everyone tried to stop him, but you took the lily out of his hand and ate it, making you officially unkillable. Everyone you knew was destroyed, killed, Tanjiro, Inusoke, Zenitsu, Nezuko...everyone even Muzan. You couldnt stand the pain of living for all enternity as both demon and human, but you couldnt do anything. Fast foward your in the mordern day with technology and Demon slayer academy was built, but you bumped into your long lost friends