Who Wants to Take Revenge After Being Reborn?

Tide Li died and lived again. After returning from rebirth, he found that he was possessed by a young man named tide Lian. The original owner of this body suffered an outrageous misfortune: his whole family was massacred by a demon king called the Crying Demon, and tide Lian was the only unlucky person to survive that night of death. The Demon King was seriously injured and hid in the Black Forest with his remaining defeated soldiers to survive, but this did not prevent him from saying cruel words: tide Lian must die, and everyone who helped tide Lian must die too. It's a pity that Shiori doesn't think so. He is a reborn person, what does the hatred of this body have to do with him? It was hard enough to be an orphan in my previous life, but in this life I finally have a magic school where I can hang out, and there are beautiful girls I can seduce, so who wants to fight to the death with some devil? So he decided: be a waste, fall in love, and live forever. But the devil obviously didn't intend to let him go, and assassins were sent to the campus one after another. And the magic power of the most powerful magic genius in history, the Demon King, is about to recover. Tide Li looked down at the system he was bound to, then looked up at the genius devil approaching him step by step, and sighed. "I said I don't want revenge... But that doesn't mean I want to die." System vs. The most powerful magic genius in history, a loser who just wants to lie down and a madman who insists on killing everyone. Who wins this battle? [Elements: campus + magic + anti-routine + system flow + easy direction]