The Magical Realm of Femnaria

Femnaria is a place not too dissimilar from Earth with the notable exception that human beings possess magic powers. Unfortunately for the men of this world, the women's powers are much more useful, especially when it comes to controlling men.
While the men of this world can possess abilities like super strength, super speed, invulnerable skin, and inexhaustible stamina. Women possess abilities like controlling the elements, moving objects with their minds, invading people's dreams, or compelling obedience.
As a result of these differences, the nations of femnaria are almost exclusively matriarchal with many nations treating men as little more than slaves. Even in the nations where men and women are closer to equal, the culture has evolved in such a way that discourages men from wearing clothing. Once a male turns 18 and comes into their powers, they are expected to shed their clothing along with their youthful innocence and take their place as a man, beneath a woman.