Kaiju and humans, two groups that never would agree. One would disturb the latter and conflict would ensue, most times ending favorably for the former. This was seem to be onset for millennia until one destroyed the other, until the Bondings happened. Suddenly, across the globe, humans and monsters were one, able to fight, defend and live together. Dubbed Kaijin, these humans could display various levels of control and communication with them. Rumors have that a few even share like abilities, superpowers of sorts. For now, most are fugitives seeking shelter from world powers and organizations seeking to control a beast of mass destruction. The world scrambles to piece itself together to find and try to contain kaiju and their Kaijin.

And to an extent, it worked. Plenty were discovered, and dealt with. Some were allowed to live in peace, others put on the run. Those unable to be commanded became kings and rulers, heroes and villains outside of the law. The more deadly were dealt with permanently, enlightening the issue of snapped bonds. A person surviving a severage would simply break mentally, becoming little more than a vegetable. If the opposite happened, the gigantic beast would go berserk and rampage until it was killed. When a terribly strong kaiju lost it's Kaijin, it resulted in a devastated Los Angles that was rendered uninhabitable for decades. Rumor has it that it still prowls the nearby area, keeping any attempt to reclaim it's wasteland.

After this, most were left alone, allowed to keep control in secret. Most kaiju, controlled and free took the time to return to remote places or hibernation But yet, something has changed, and kaiju are returning. The future is unknown,and is a stage once more for the play of Kaijin and Kaiju once more.