Mashle: Magic and Muscles, Vol. 11 (manga)

With Lévis defeated, Mash must face his toughest opponent yet - his brother Domina, wielder of water magic. Desperate for the approval of his father, Domina aims to claim the Wand of Beginnings, which Innocent Zero could use to bring the world to ruin. To put a quick end to their bout, Domina summons a power as devastating as a Divine Visionary’s. But Mash has a trick up his own sleeve. Will Mash come out on top in this sibling rivalry?!