The Berserker is a slayer that has fallen prey to the "Kazan Syndrome" which originated from Kazan, a god of destruction. Although his physical functions have improved to an astonishing level thanks to the Kazan Syndrome, he has also become embroiled in bloody rage, destroying everything in his path. However, he doesn't actually want to hurt innocent people and is searching for a way to control his bloodlust, fighting strong people in the meantime to keep himself from losing all control.