Universe

A Mage's Hunting Ground revolves around the Earth that has been the recipient of magic from an unknown source. The story's time is set on the Year 2065, the 50th year of magic entering the lives of humans and the peak of the magical era.

Magic History
The first speck of mana appeared on the Year 2015, when a Gateway appeared in the United States, stemming from a large puddle on the middle of the road. A bright light was said to have been emitted from the puddle before it died down and displayed symbols floating around the pool of water. Those symbols were called Rune Circles. The event stirred panic around the world, people speculating of alien invasions and the like. Although having appeared abruptly, the Gateway remained stagnant long enough for the citizens to evacuate and the US Army to arrive. The glowing markings slowly disappeared one by one, as if a countdown.

The Army held their breath when the Rune Circle completely lost light before shining bright again. Beasts started to pour out on the streets, knives in their hands. Twelve goblins versus hundreds of soldiers—of course the Army was beyond relieved when they saw the match-up. The Army rained bullets on the small band of goblins, but the pieces of metal did no harm. Soldiers desperately looked for means to do even a little damage to the beasts but to no avail. The goblins wiped-out half of the soldiers before tossing away their weapons and scavenged the streets as the remaining humans tried to escape the massacre. One of the remaining soldiers, clinging onto tiny hope, picked up a discarded knife of a goblin and impaled one of the green creatures. Only then did the beast cry out in agony and green liquid seeped from its side.

That started the counter-attack of the soldiers. Of the goblins, only four of them had their knives with them while the other eight were at the hands of the soldiers. It took only a matter of time before the beasts had been defeated. The glowing Rune Circle started to fade away, leaving just the puddle on the ground which was back the way it was. The only proof of a supernatural event happening was the magical stones left in the puddle, runestones.