Demon Lord: Assimilating Billions of Lifeforms from the Start

[Transmigration + No Female Lead + Cold and Ruthless + Revenge + The Darkness of Human Nature + No Goody-Two-Shoes] To avenge his parents, Xiao Tian dropped out of school and spent two and a half years as an assassin. During an assassination, an accident left him on the brink of death! A System appeared and transported Xiao Tian to a parallel world, where he became a slave. Of a hundred slaves, only one would survive. Xiao Tian awakened as a Demon Lord, infected all of humanity, and became a regional overlord who ruled this world. Golden finger: Travel to a parallel world, and use Destruction Points to draw treasures! Demon Lord: Each time you level up, you awaken a new skill!