I'm a Good Student, so It Makes Sense to Kill the Principal at the Beginning, Right?

An unknown disease spreads, infected people transform into bloodthirsty demons, and the world rapidly collapses. Even those who survived the infection could not escape the fate of being eaten alive by the demon. On the day when the devil came, Ren Gangjian unexpectedly awakened the ability of "soul power explosion". With soul power driving Ren Gangjian's body, from now on, as long as he wants to, he can become stronger just by thinking about it. At the moment of awakening, Ren Gangjian saw the bleak future of the world like a psychic. Demons are rioting, people are in dire straits, corpses are everywhere... Only Ren Gangjian himself, as a fighting madman, could survive alone. "Slay demons and demons, I am the mad god!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.