readnovel

Magic came to our world. Portals opened all across the planet, releasing mana and dangerous monsters on the unsuspecting population. Wonder turned to horror. Society was on the verge of collapse, until heroes rose to face the catastrophe. Those fearless men and women wielded the power of mana to enter the portal worlds, plundering their treasures and slaying beasts bullets barely harmed. Through their efforts and sacrifices, mankind stepped into the future. They were called users, or raiders, and they became the champions of mankind.