Adam's Sweet Agony

This is the story of a boy who becomes the lone Adam among four billion Eves. In a world decimated by a pandemic that renders all men impotent, Itsuki is the sole survivor who escaped it. To protect this secret, he transfers to a highly distinctive high school, which is revealed to be composed of 90 percent girls. There, he encounters an upbeat and friendly senior, a sexually frustrated female teacher, a tomboyish school 'prince', and an heiress from a wealthy lineage. For Itsuki, who has his pick of any woman in the world, the question remains: which one will he choose?