Awakening as the Yin Emperor, I Will Rebuild the Underworld

No Female Lead: The Male Protagonist Is the Underworld's Yin Emperor, Incredibly Powerful and Not a Do-Gooder

I’d like the male lead to transmigrate, have a Netherworld System, and be practically invincible.

The Protagonist Is a Zombie, Ghoul, Ghost King, King of the Underworld, Yama, or Yin Celestial Emperor

No female lead, and no bleeding-heart protagonist! Thanks 💋

Black and White Impermanence, the Underworld, and the Yin Emperor

Yin Celestial and the Underworld, No Female Lead, No Goody-Two-Shoes Protagonist

Not an urban novel!

Rebuilding Heaven or the Underworld with a System

The protagonist transmigrates to a world with neither a Heavenly Court nor an underworld. They get a System and gradually establish one of the two, eventually becoming its ruler.

Mythology Descends, and the Underworld Is Rebuilt

A pretty good novel. The protagonist is the Yin Emperor, and the System arrives alongside the mythological underworld, ruling the universe and stabilizing the land.

In a Godless Huaxia, the Protagonist Becomes the Yin Emperor and the Vessel of Huaxia as Horror Returns