Tbf most women entered the harem for political reasons... and the emperor showing favor to them was more to appease the families than for love or lust. That's also why the women gave so much importance to bearing children, especially boys, to solidify their positions and their family support. I think he cares for them to a certain extent... but no real love. He loves his kids more than his women.
Also, it's not just because of her beauty, he at this point is feeling very guilty towards her for neglecting them and blaming her for his son condition since he didn't know it was all due to plotting of others.
I know it seems I'm defending him, but I'm not. Just explaining a bit of context. No emperor in harem stories are good husbands in our current standards.
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Noo I understand how harem works haha. I'm just saying that I hate the emperor. Yes he doesn't love any of his women, but ofc loves his children. The reason why I mentioned the emperor only being horny and cared only about looks cuz he wouldn't care about MC's mother if she wasn't pretty or behaved well, look at the other lady who's face is now scarred ;-;

The only reason the emperor likes MC's mom is cuz she's "beautiful". He's always horny too. He doesn't love any of his wives, he just lusts them