Summoning Civil Officials and Fierce Generals in Another World

A new era dawns, and the world undergoes a dramatic transformation. The native plants and animals of Planet Earth mutate and revert to their ancient forms at an incredible rate, while species from other worlds are cast down to Earth. Eventually, humanity of the new era develops an entirely new profession: Monster Tamer. Taming monsters, raising monsters, training monsters: that is what a Monster Tamer does.