The Abyss of Souls

No System, no transmigration, a steady leveling-up story.

The world is divided into the Heavenly Realm, the Earthly Realm, and the Netherworld.

The Heavenly Realm is ruled by divine officials, the Earthly Realm is protected by gods, and the Netherworld is where the god of death reaps lives.

There are different races and cultures, as well as unusual species and demonic beasts.

There are cultivation systems, along with remnants of ancient technological civilizations.

The protagonist is a white-haired boy with the ability to devour the souls of the dead.

He can also gain the talents, memories, and personalities of the dead through the souls he devours and fuses with.

After devouring and fusing with a soul, he must avenge the deceased, or be consumed by the hatred they carried in life.