Where Did All the Men Go?

Synopsis

With humanity teetering on the brink of extinction, its male population decimated by rampant misandry, the few surviving men have undergone a radical evolution to become the "Egen-nam." Amidst this absolute crisis threatening the very survival of the human race, Kang Dae-geun, an old-school "Teto-nam," finds himself shouldering rights and responsibilities of truly "state-level" magnitude, all in service of the sacred mission to ensure the propagation of the human species.

Egen-nam is slang for estrogen/feminine men and Teto-nam for testosterone/masculine men.