I Became Mordekaiser's Younger Sister

Around 400 BC by the Noxian calendar, the long Darkin War finally came to an end. The mortals who had been forced to serve these fallen gods gained the freedom they had long yearned for. But freedom was soon followed by confusion and fear of the future. Some chose to crown themselves kings on the lands where they had always lived, while others, afraid their former masters might return, chose to flee.

For a boy named Sahn-Uzal, his original, fondest wish was simply to carve out a future where he and his sister could survive in this cruel world. Only when his sister truly returned, guided by fate, did he slowly come to understand that the world, and the universe, were not the only ones of their kind.

(PS: No gender-bending, no becoming someone's wife, taking on great deeds, astounding wisdom.)