All I get from this is that the Japanese medical system sucks, and they don't care whether kids live or die. You're saying one of the most prominent hospitals in Japan doesn't have a pediatric department. Furthermore, you don't have any doctors well-versed in pediatric surgery and no residents willing to join the department. How does this make sense to them? Hopefully this is just a plot device used for the manga rather than an actual problem in Japan. Otherwise, that would be crazy.
For someone who was reincarnated, MC really doesn't make the best decisions. He tries to keep a low profile but engages with his brothers when that is likely the worst decision possible. I understand he cares for his brothers, but trying to befriend them or build a bond will ultimately lead to his doom. The queen is delusional and thinks that the MC is a threat to her kids and the throne when he literally has no backing. Honestly, MCs like this frustrate me because they knowingly endanger themselves.
Honestly, I truly pity the ML. He will continue to live for thousands of years, only to be alone. Worse is that her lifespan of 100 years must feel like a couple of months for someone who lives that long. He will essentially be forced to watch other dragonkin and friends around him find mates, have kids, and grow old together, while he'll likely never experience that. Especially, because he is willing not to change the relationship between himself and MC into a romantic one if MC only wants it to be platonic. This genuinely sucks for him. I kind of wonder if the author made the MC a child so that ML would have more years together with her, compared to if the MC were at least 18/20. Or that's what I hope the reasoning behind the age gap is. Anyways my point is I feel bad for the ML who will outlive her drastically and live a lonely life for millennia.
Why do I feel like the mom is going to abandon them. Moreover, that guy she is seeing looks like a con artist. Next thing you know, he wants to take over the MC business ventures and suck the family dry of their money and make a run for it. If the mom is really going to abandon them for a man, I would have preferred her to pass from grief. Though that may sound bad.










Maybe I'm different, but I really don't like books where the omega/woman gets pregnant and doesn't tell the baby's father, especially if the baby daddy is a decent person. I find it kind of unfair, like that person misses all the milestones of their child and sometimes causes the relationship between the child and father to be strained when they meet later down in life. If the baby daddy showed signs of being abusive, I would not say anything, but it always seems selfish to me when the mother of the child chooses not to because of pride and fear of confessing their feelings. Like this only benefits/saves you, not the child. Especially because kids and people in general can be cruel, and the child may eventually feel some type of way from having a missing parent.
Anyway, this is just my opinion, I'm not particularly expecting people to agree.
Also, when I say abusive, I mean any form of abuse, whether physical or emotional. If the man is a narcissist or misogynist, it would also make sense that the mother may choose not to say anything. However, in cases like the first story, I truly can't see a good reason not to say anything.