Midway through the year 2030, a perplexing, multiverse-impacting incident, currently known as Genesis, induced several worlds to collapse onto each other and connect temporarily. Humans were clueless as to why this had happened.

Soon a number of new races and other creatures had appeared and humanity, no longer the apex predator, was compelled to forge a peace treaty in order to eschew territorial wars… Although, casualties had already occurred across the planet with no repercussions taken. Several cities and towns were engulfed in battles between the human forces against the other worldly creatures with millions of fatalities from both sides.

Presenting an answer to the growing problem, several cities were constructed to help the cohabitation of humans and beasts to avoid matters of harassment and belittling. Although, this solution remained within the city walls, the outside being a very treacherous place for non-humans and sometimes humans themselves.

As a further remedy, a new section of the government was assembled to handle matters pertaining to Genesis and what it has entailed, along with a unique military group, operating worldwide, was conjured to help maintain the relations between the monsters and humanity at a stable level.

Meanwhile, in a certain town, a young orphan was left for dead after one of the many conflicts…