In a world where only women can receive the "Goddess's Blessing," men have become obsolete. Women conceive children through prayer alone, leading to a society where being born male means facing constant discrimination and oppression.

Libido, a male slave for an all-female adventurer party, is abandoned as a decoy during a crisis. Left to die in the depths of a dungeon, he draws his final breath in misery. "I can't die like this... not as a virgin!" In response to his intense carnal desires—still burning bright despite the world's cruelty—a unique power awakens within him: the cheat skill "Protean." This ability allows him to see through a target's secret fetishes and transform into the exact form that satisfies their deepest cravings.

Armed with the ultimate skill, Libido begins his revenge against the women who looked down on him and all of mankind! Use cheat skills to take vengeance on the beauties who despise men!