
Twenty five years ago, thirty miles coast of Honolulu was when the first rift appeared. A portal to another universe, or rifts as they were later named allowed creatures from alternate realities to enter our world. The United States Navy and Air force engaged the other worldly invaders for weeks, support from Japan, China, and the United nations managed to drive them back into the rift.
The rift closed soon after, with over twenty ships lost and two hundred aircraft destroyed the battle marked the beginning of what would come to be known as the Rift War. The creatures that exited these rifts appear to resemble demons, dragons, and other cultural myths. They proved themselves devastating foes, even against superior weaponry they still concentrated fire to bring down.

This lead to the theory that this was not the first time rifts had opened on Earth. That somehow, a much less advanced culture had defeated and seal the rifts. That was why these creatures were so storied on Earth, naturally at dig sites around the work began to find something to link these invaders to our past.
This is how the relic tablets were discovered, stones from this other world, engraved in an indecipherable text. The script upon them appeared impossible to read, until a ten year old whose father had been studying the stones saw it. He spoke the words written upon, their at his side appear a creature from beyond our own world a Hell hound straight out myth. Yet it did only as the boy asked and other seemed more like a pet than an animal. With the child himself gaining pyromancy, control and creating fire at will.
The stones were linked to children, who whether through belief or some other property were able to connect with the creatures. They called it the Summoner Gene, a gift that roughly five percent of Earth's children have. Quickly older children, teenagers were found to have these abilities and begged for aid in this war, they agreed and began to train themselves for battle.

Able to command and summon a partner creature, the summon also gained access to weapons or abilities related to there summons own elemental type. With these summons, and there teenage partners, the Rift Wars came to a swift end. The monsters unable to establish a foothold retreated, yet now with these new powers the world quaked in fear. What could these summoners become? Would they fight for Governments? Or would they attempt to destroy them.
The United Nations came together declaring instead of giving the teenagers back to their parents nations that the war heroes would become teachers. The UN had uncovered thousands of these stones, with more found around the world it became apparent that they would need prepare those with the Summoner Gene to defend themselves and create a police force capable of going after unregistered and dangerous summoners.