Unleashed! A Demon God in Me!

Su Bai wants the demon god sealed inside him awake. What feeds it is malice, so he sets about getting people to hate him and takes in what that produces. Nothing comes of it until the medical exam for the college entrance, when whatever is in him breaks out in front of the room. The war goddess Ye Shuang takes over guarding him after that. He enrolls at the war academy in the capital. He is nearly killed there several times, and the demon god's power comes up in him. He clears out mutant beasts, breaks a plot by the Beast God Cult, and crosses into another world where he fights the Void Sovereign with his hands. He sleeps for three years afterward.