Elementals wreak havoc across the many islands of the Aquerima.
Elementals are bigger, stronger, faster, and are incredibly hard to kill.
Fortunately, the inhabitants of the cosmic tree are able to combat these elementals through the use of relics.
These relic-holders are known as contractors. Contractors can manipulate one of the many elements ever-present.
Standing at the peak of the contractors are the legendary S-rank contractors.
An S-rank contractor, who also happens to be a herbalist, must figure out a way to save a certain battle-crazed Hero from something known to be incurable within only a few years.
Unfortunately for them, the time frame is much shorter than it seems for the era of usurpation had already begun...