Game End System

Across the globe, millions were branded with a strange rune in their dreams, granting them systems. On that same day, the invasion began. Portals tore through space and time, horrid monsters crawling out from it. The world wasn't ready for it, and billions died on that day. Joseph, a mostly normal 16-year-old boy, for an unknown reason, was gifted an advanced version of the same system everyone else got, the Prime System. Now he must survive and stop the demonic forces invading the earth, guided by the system. Inspired by novels like Solo Leveling and Omniscient Reader. Cover art is not mine, if it's yours contact me, and ill change it.