In a reality-warping, hyper-erotic version of modern Korea, The protagonist a withdrawn and solitary young man awakens to find that the world’s common sense has been completely rewritten. Sexual limits have evaporated, social boundaries have disintegrated, and men’s desirability is now ranked by the official grade of their penis a government-recognized status that comes with tangible benefits. Overnight, explicit behavior, shameless temptations, and public sexual acts have become unsettlingly ordinary. Still reeling from these new norms, The protagonist is approached by A girl, an enigmatic and overwhelmingly influential executive of the Ero Phenomenon Administration (EPA) a covert government organization that oversees and manipulates supernatural sexual anomalies through mysterious “ero artifacts.” From her, The protagonist learns that the world was reshaped by a powerful erotic artifact wielded by the former EPA Director, now deceased, who named The protagonist as a successor. Suddenly, The protagonist finds himself a candidate to inherit not only ultimate authority, but the ability to rewrite reality itself.