That Handsome Nerd is a Girl

Chen Ming, the Ancient Goddess of Eternal of Demon Universe Beings, who ruled the 1 million universes in her domain, who was ruthless, bloodthirsty, and the most dangerous thing in this world, crash the ants in his palms, covered her hands with blood like heavy rain. After betrayed by heaven who were her allies.1000 years later, she reborn again as Cain in the world called 'Earth' but with retaliate, she lost his memory and became the Geniuses son of the royal family in the foreign country and learn about the tactics of humanity...but she is a girl?