There must be something wrong with your head if you take father's side instead of Camilla. HER feeling is valid too, wdym heartless? And Duke Escra is jerk with the way he treats Camilla's brother. Don't you see how hurt his feeling was with they way that Duke treat him? And the way he treats his bio son is also trash. Godness, you really think that man is a good father or what?
I think you have a problem in your head in this case. Camilla is amazing. She's acting foolishly based on deaths she didn't experience. It was the bad soul who experienced them. She herself suffered in Korea, but that was because of the soul swap. Now everyone acts differently because the good soul is there. If she can "forgive" her adoptive father, she can forgive him. They became good, even with Ravioli, once the real soul arrived. Before that, even Ravioli was unloved and forgotten in a corner... so it's the same for Father. Without knowing he had a daughter he'd forgotten, he was an empty shell with his own cute little son. But after meeting Camilla, he tried to get closer to her, and little by little, he truly loved his daughter. It was through contact with the original soul that he "became" human… so yes, Camilla should understand that the world revolving around her was empty and meaningless without the real Camilla…
I think you have a problem in your head in this case. Camilla is amazing. She's acting foolishly based on deaths she didn't experience. It was the bad soul who experienced them. She herself suffered in Korea, but that was because of the soul swap. Now everyone acts differently because the good soul is there. If she can "forgive" her adoptive father, she can forgive him. They became good, even with Ravioli, once the real soul arrived. Before that, even Ravioli was unloved and forgotten in a corner... so it's the same for Father. Without knowing he had a daughter he'd forgotten, he was an empty shell with his own cute little son. But after meeting Camilla, he tried to get closer to her, and little by little, he truly loved his daughter. It was through contact with the original soul that he "became" human… so yes, Camilla should understand that the world revolving around her was empty and meaningless without the real Camilla…
Bro had a WHOLE ASS YEAR MISSING FROM HIS MEMORY AND DIDN'T EVEN TRY TO FIND OUT WHAT HAPPENED!!! He ignored Dive to the point where he was being abused BY HIS NANNY WHO MIND YOU WAS SUPPOSED TO BE A CLOSE FRIEND OF HIM AND HIS DEAD WIFE!!! He is the head of his house and you're telling me he didn't even bother to check on how his youngest son was or how was his school going?? The poor kid was wearing fucking long ass sleeves is SUMMER!!! He barely ever fucking listens to her and when he does he does the complete opposite of what's she wants. He mostly sees the potential in MC by how useful she is, and ya I get MC has trust issues but they are there for a fucking reason!!! And ya I get MC is kinda cold towards him but it is extremely valid!!! He knew he was missing a whole year worth of memories and didn't even bother to find out what happened, he had fucking 18 years to even TRY and search and he didn't, the only damn reason he found MC was because she was doing business in his kingdom other than that he wouldn't even KNOW she had existed!!! He genuinely fucking sucks as a father.
I think all of this stems from the fact that the original Camilla's soul was missing. The world lived differently with the fake one… and it lives differently now. It's not just because it's a transmigration. I think anything related to "Camilla" isn't "normal" until the real soul is here. I think that's the reason for the lack of feelings from the father and the adoptive family…

She's so heartless sometimes. She doesn't understand that this is her real world, so everyone's feelings are genuine this time. And even when she's accepted it, she doesn't understand it when it comes to her real father. He never had the chance to find his real daughter; she died long before because she wasn't the soul of this world. Now that she's here, and he's discovered her, it's only natural that he wants to get closer... She really gets on my nerves!