Kuroki_Shishiro
A rewrite is nice, though it would be nice if the MC was still human and didn't have a Vision (hopefully the MC wouldn't be suddenly be OP and have less/no more enemies)... and for the System part, you could have made the system sacrifice itself at the time the MC ate the dragon's heart (I quit and don't remember much about genshin and its lore)... like, had Celestia/Heavenly Principles detected that as an anomaly/something that upsets the balance of the predestined fate of the world, and the System had to sacrifice itself to delay that or something... but write what you want, Author. Don't mind the plot holes too much... as it is just a fanfic, and it would give you unnecessary stress..