Love Is an Illusion! Vol. 1 (manga)

Hye-sung spent his entire life believing he was an Alpha, the jackpot of the genetic lottery. But his world is flipped upside down when he finds out he isn't a dominating Alpha, but a submissive Omega. His frustration is pushed to its limits when he constantly crosses paths with the handsome Dojin, a true Alpha.

Dojin supposedly can't stand Omegas, but his head-butting with Hye-sung results in explosive arguments and unexpected sex. Is this sizzling chemistry truly just their bodies reacting?