Ok, so I have not finished the series yet (70+ chapters) however:
If the Omega protagonist (Hye-sung) is getting on your nerves right now in the first few chapters, don't be discouraged and don't drop the series yet! His personality gets so much better (and cuter) in the latter half of the story (mostly starting in the side stories, which starts very early on).
The story is cute, there is drama, but I really enjoy the writing and the characters. I enjoyed the art too! Which was surprising because I felt that the sudden drastic change of art was jarring in her previous work (not that the change of art was bad, but she had a cool different art style. * If you remember how the original Hye-sung looked like...and his personality....then you know what I mean!!! *. She really Uke'd him artstyle wise.
I read If You Hate Me so first, and could not stand these two in that series (skimmed their relationship, felt awkward), but in this Omegaverse I love them. Hye-sung is more fleshed out, and he redeems himself. The relationship is a bit dubious especially at first.....however it does get better. I love Dojin's personality...how he is loving and loyal towards Hye-sung and very patient...I am glad both of them were not assholes, Hye-Sung was enough oof.
I thought at first what was the author thinking re-using the same characters from her previous work (the third couple from If you Hate Me So) but gave her reason that she thought it would be a waste to let them go (something along those lines) and actually I agree with her now. Their personalities are such a contrast but story wise their development is great.
I really enjoy the second couple too (Master.....). However, the third couple does not interest me whatsoever (the beta is cute though).
Some things left me kind of going hmmm?? for example, Dojin being in a band, but his family being RICH AS HELL. I am sure this stayed like this instead of him starting a company like his brother or running a mall like his sister because in the Author's previous story he was into music too, but had a normal job.
About Hye-sung redeeming himself: I liked how the author gave him character development and he was less of an asshole in the side stories. Hye-sung REALIZED what he did leaving them behind and how much of an asshole he was to Dojin (however, Hye-sung was 20?, and honestly even with a shitty personality that he had it's a bit too much Dojin wanting Hye-sung to keep the baby but Hye-sung not wanting to...and then this made Hye-sung decide that he is okay with having the baby but that he wants money and no attachment to the baby whatsoever....) but I am happy that they are happy together now!
Dojin's family: I'm glad the author kept it VERY lighthearted and non-drama when it was time for Dojin to tell his family that he had a child and especially with an Omega. I think the author wanted the latter half of the story to be more light hearted....and not having Hye-sung and Dojin to suffer anymore HAHAHA.
Also I loved how Hye-sung was the one who wanted Dojin to be on good terms with Dojin's family so Hye-sung went over first for them to be on better terms and brought baby Byul aaaaaaa