The beginning

A new universe has suddenly appeared, and with it came hordes of destructive monsters. The monsters' sole purpose is to wreak havoc and destruction in our universe. It seems that these monsters were created by the other universe to weaken our universe and assimilate its strength. Although the other universe is stronger, our universe is smarter. It has created a system for its inhabitants that allows them to extract experience points from the corpses of the monsters they defeat. These points are then used to strengthen themselves, enabling them to fight the monsters and ultimately triumph over them.