Savior of Divine Blood ~Drawing the 0.00000001% and Becoming the Strongest~

Players are superhuman beings who counter threats from other worlds. The bullied protagonist, Ariake Tosei, is chosen as a 'Rainbow' rank player, which is neither the existing gold, silver, nor bronze. He gains the skill to freely manipulate blood, and his life and status completely change. Amidst his continuous battles, he gradually emerges as a 'Savior', a being who will save the world...