Geu Alpha-reul Kkosineun Beop

Born into a family of handsome, wealthy, and well-educated alphas, Woo-Young always expected he would be the same. Come to find out, he was the odd man out as the lone omega, and not even a perfect one at that. To compensate, Woo-Young goes through life pretending to be a beta, but when he begins to experience hormone imbalances, irregular heat cycles, and a distinct lack of control over his impulses, his lowly recessive omega status becomes impossible to ignore. That’s when he meets Kyung-Ju, a powerful and successful dominant alpha who can turn him into a true omega, and also makes him weak in the knees. Now, Woo-Young must use every tactic there is to court Kyung-Ju and make the brooding alpha his very own.
(Source: Tappytoon)

Note: Chapter count includes a prologue and 23 side story chapters.