Rebirth Super Learning System

A humble elementary school student who was inconspicuous on earth and was bullied all the time (there were no scumbags left, even the scumbags looked down on him) was reborn in another world and eventually became an almighty god of learning, causing a bloody storm in the other world. One kowtow before the god determines life and death. Since we have made the oath of brotherhood, we will depend on each other life and death and never leave. So what if you are the sect leader? Still the dead soul under my sword. Thousands of demons are roaring in the devil's cave. As long as I still have the sword in my hand, I will move forward even if there is no recovery. Are all those who become demons ruthless? Demons also have feelings. If I become a demon, I will dye Xuanyuan with this demon blood and punish all hypocrisy and exaggeration in this world. I want to restore a perfect world to this world!