Voidmancer - A LitRPG System Progression Fantasy

A SAS Major who had been abandoned and ridiculed by his family for just existing, finds a way to thrive in the System after the integration of the 18th Universe. Earth has been inducted into the Multiverse, but, the Major, named Orpheus, a very bad name for someone who is as lonely as he and is accused of being a son of Satan, and someone who only brings bad luck, is framed and hunted after the Tutorial, leading him and his squad of SAS to the Dead Lands, a place of absolute death where nothing can survive, due to this, the Major and the men absorb high amounts of Death-mana leading them to become the very first undead of Earth, and extremely powerful undead as well, the Major, taking it a step further, falls into a cave with a void presence, mutating and evolving his race and class, all the while being hunted by what seems like the entirety of the Human race.