The Boxer, Vol. 10 (manga)

How did a man like K become so hellbent on seeing the pinnacle of human superiority? How did a boy like Yu lose the light in his eyes? Two very different paths converged in space and time and led to this very moment—a moment of life and death, human and monster, power and omnipotence. As Yu and Aaron circle the drain, a god may be born…or a life may be taken!