Omegaverse. Hye-sung is an omega who thought he was an alpha his whole life until he met Dojin (very rich son of a big family enterprise) at a party. Their pheromones attract and they hook up and accidentally get pregnant. Once the baby is born they realize their feelings for each other and get married. Life gets difficult because of them being bonded and Dojin’s workload (as a lead singer in a famous band), but they work it out, always.
Love Is An Illusion