Become a Sigma Man and Reverse the World

An imaginary historical dynasty, a female emperor, and a group of powerful female guards. The third son of the Empress was neglected by the Empress, bullied and ridiculed by the princesses, had a high fever and had no one to take care of him. When he was about to die, he was possessed by the soul and recovered. He escaped from the palace at night and unlocked the "Sigma Man" system on the way. From then on, he changed his name and surname, determined to reverse this twisted world.