Number One Demon Under Heaven

Number One Demon Under Heaven,

Extra Tag: Overpowered Protagonist, Kingdom Building, Harem(?), Powerful Subordinates.

Shi Xiaofei felt that something was wrong with his reincarnation. After dying, his soul flew inside the body of one the highest experts in the world, the Emperor of the Dead Nether, addressed respectfully as the Demon Sovereign.

Wait wait, wasn't he supposed to be reincarnated as a trash young master without any future? Why was he reincarnated into a ruler that reigns over billions of demons?!