Martial God Ascension: Starting as a Vagrant

The continent of Kyushu is plunged into chaos.

Demons and monsters run rampant, corrupt officials are everywhere. Buddhist demons wreak havoc, and demonic Daoists seek to refine all living beings.

The paths of Confucianism, Buddhism, and Daoism each offer extraordinary power, but their practitioners are consumed by petty squabbles, powerless to mend the heavens.

Meng Yuan transmigrates to this world, possessing a strange essence flame.

As long as he eats, he can nourish the essence flame, which in turn refines his body, allowing him to shed his mortal coil and be reborn.

To protect himself and ascend the Grand Dao, Meng Yuan first becomes a gelder, castrating pigs and sheep. Then, he uses the martial path to castrate the evil of the world.

(Eastern Fantasy, Rigorous Worldbuilding)