Zombie With A Renegade System

"Demons, ghouls and vampires have filled the earth, will an ordinary zombie with a dead skull find a way to overcome them?" *** In an instant, the world is suddenly filled with chaos. After planet earth was hit by a strange meteor, the earth's surface split into several parts and huge ugly monsters erupted from the open parts of the earth's surface. Many of these monsters destroyed the humans. While some only infected humans through biting, some infected humans through blood contact. With this knowledge, many academies taught their students the use of magic for self-defense. Despite the school's effort to protect its students, a random sixteen-year-old from a renowned academy was bitten by one of the monsters. Scared of what he might face when they realise, he decided to bury the secret. However, things escalated quickly and he got killed by a group of friends who discovered it. Just when he thought he had died, he was woken by sudden beeps. [System Installation...] [Welcome; Undead.] Nevertheless, he found out that he had just been transmigrated into a different body and granted a system. The more humans he infects, the more Exps he gains and the stronger he becomes. Going to the same academy where he was killed wasn't what bothered him. He was bothered by the fact that as an infected, he could not use magic. To be able to use magic, he needs to obey his rebellious system and become its master. But will he succumb to the urge of infecting others? However, what happens when all of a sudden, a fraction of his classmates becomes demons, ghouls and vampires? Will an ordinary zombie become powerful enough to fight extraordinary creatures? "Watch me rise from a nonsignificant element to someone who has the whole world on his fingertips and could flip it whenever he wishes!" Disclaimer: Book cover doesn't belong to me.