Genshin Impact: It All Began When I Fell in Love with Barbara

Tian Xin, who commands Liyue's military and wields the Electro Archon's power, somehow transmigrated to the continent of Teyvat. Under the System's initial threats, she gradually embarked on the path to becoming Teyvat's bulldozer.

(There are lots and lots of fanon elements, so don't read if you dislike that.)