Mc blackmailed ml into marrying him because he really liked him. Ml already had someone he liked who was his friend. Basically everyone thought that ml and his friend (say C) would be together so they hated Mc. When Mc got pregnant (I don't think it's omegaverse) they still treated him like sh*t but daughter was a princess, everyone loved her. Mc tried to make ml like him but ml always rudely ignored him or hurt him with his words. I think he once even slapped him yeah when Mc was pregnant mc's friends decided to take revenge on C because they thought that it was because of him that ml treated Mc so badly. But Mc did not give them permission and ml thought that the whole thing was planned by Mc and slapped a pregnant Mc. C got traumatized because of that incident. Oh but Mc had premature delivery, lot's of bleeding, almost died and there was no one by his side, ml was still taking care if C when Mc tried to call him. And after that Mc became really quite and jittery but no one noticed. Mc earned his own money by playing online games, he was good at it, with his friends. Ml and his family despised him because they thought he was useless, what could playing games do!? I think this is enough!? Anyway in the end Mc died after some drama but oh this is not the real end.
Yes. What happened to Mc was really really bad. This not much as compared to what happened later.(◞‸◟)
It sounds a bit like Unspeakable... Not 100% sure because I didn't finish the novel. https://www.novelupdates.com/series/unspeakable/