Mashle: Magic and Muscles, Vol. 16 (manga)

Mash shows off the hard-won results of his strenuous training against his greatest and final obstacle before confronting Innocent Zero—Doom! Now that he knows the extent of his body’s capabilities and how to control them, Mash’s strength has grown to an unimaginable level! But Doom, having found a worthy opponent, responds by unleashing his own true power! Meanwhile, the eclipse is almost here, and Innocent Zero’s power is near its zenith. Who will come out on top in the battle between ultimate powers?!