This is something I wrote early on about the series, and I just hope the author doesn't make Hyesung the bad guy and force him to reconcile. If there's no actual discussion and resolution, it's just going to make the rest of the story hard to read. I already dislike the story direction with the cousin and the other girl (I don't like the pairing at all), having such a major plot point fumbled will bring down everything else.
The staying in contact with Hyesung's mom problem. Like I get she escaped an abusive relationship but she had years to contact her son. By the start of the story Hyesung is an adult, so it's not like she HAD to have the father's permission to see him after a while. Also, hypothetically, if she had the opportunity to actually see her son earlier, would she have still kept him a secret? She didn't tell her new family about him even after trying to meet him, so would she have still kept him a secret from her family even if she could see him as a child? I don't like the mom, and I didn't feel sad that her new family left her, like she abandoned her son once, would she also dip out on them if the tides turned? So that whole bit just left a sour taste in my mouth, and unless it becomes an actual storyline with Hyesung being angry at his spouse and child, it'll just be a shitty thing to force someone to accept. What're they gonna do next, secretly take the new baby to see the mom when Hyesung cut her off for valid reasons? For Hyesung to reconcile with a woman who abandoned him and only showed back up when it was convenient for her?
I get the impression ppl are confused about it. Yurito's lineage is the initial family that dealt with the beasts but it's not the only one. So not all the mates are related by lineage, but coincidentally Yurito and Coro come from related lineages from the original beasts and the first mate, although it's basically negligent how related they are by now. Also, beasts do have multiple mates, so it's possible that there's an even larger relation gap because of it. Point is, it's like 4th or even 7th cousins getting together, there's basically no genetic or even close family relation at that point.