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?

(THIS IS OLD AND ONE OF MY FIRST FFS SO BEWARE AND READ AT YOUR OWN RISK LMAO 💀✌) (Y/n) (L/n), Muzan Kibutsuji's fiancèe before falling ill and turning into a demon. She was patient unlike him, so she was able to be fully cured by the doctor with the blue spider lily. Muzan disappeared after turning into a demon, not having the blue spider lily while she looked for him. Even after 𝔸 𝕋𝕙𝕠𝕦𝕤𝕒𝕟𝕕 𝕐𝕖𝕒𝕣𝕤. [⚠️WARNING⚠️: SPOILERS!] DISCLAIMER: I don't own the anime and its characters! They belong to Koyoharu Gotouge! Started: October 18, 2020 Ended: January 30, 2021