is this an omegaverse?

no, the mc was born with a womb so a man with the ability to hold children

Hmmm no, Ci Nian (The MC) was born with a womb so he doesn’t really know if he identifies as a man or a women.

Ci nan defines himself as a man, as you can tell from Work calling him dad. He only has a womb, but no female parts to make him identify as a woman