Villains hide their pregnancy

A super-hit fantasy novel with hundreds of millions of views, An ordinary male reader 1, who was an ardent fan of 『The 13th Prince Has Regressed』. Out of curiosity, he clicked on an R-rated fanfiction of the original work, And when he opened his eyes, he had possessed the body of ‘Cesare von Valois’—the main villain of the original story and an antagonist who suffers a miserable revenge at the hands of the 13th Prince, Leoneld. He thought that as long as he didn't repeat the mistakes of the original, he would be able to survive this life safely. “Don’t tell me… am I an Omega?” “…? Yes. Are you not one of the few noble Dominant Omegas in the Empire?” The place he had entered was not th...