Historias de Muzanxtamayo

A college student died and got reincarnated into the world of a manga he once loved. Not as the main protagonist or as a side character, but as the antagonist? Would he be able to change his future?

After yoriichi save Tamayo they talk for an while then yorichi give her an paper how to do breathing concentration and hinokami kagura she kept it for safe measure and he told her about the kamado family that she is going to protect them he then later left and she went to hiding and sometimes practice hinokami kagura and sometimes checks on the kamado family he then later on meet yushiro and the hashira master kagaya knows about her and sometimes talk each other and she try to make an cure for him and everything goes the same or maybe

Tamayo in rencarnated with her memories though she runs into Muzan's rencarnation though to her disbelief Muzan looked nothing like his past life, starting with the fact he was now a she, This fic includes, OC x cannon x cannon, poly relationship With Muzan x Tamayo and my OC also trans Fem Muzan