"Horrible, savage beings that imitated life, countless of them, came out of nowhere to terrorize the world. Their presence would bring blood, death, and destruction all over Alteria."
So far, the Invaders are currently living up to Roselia's first vision.
The number of casualties the soldiers of Reilaea and adventurers have taken from the Invaders since Aran and the others first encountered one would only continue to increase.
Fighting them proved to be a very arduous task. Not only do the fighters aren't aware of the Invaders' capabilities their original counterparts cannot do, but they also don't seem to die right away even after having their hearts pierced with sharp blades or beheaded with the same weapon.
As time passed, many people lost their lives and some are currently in a dire state, trying to fight back and figure out more about these Invaders.