after reading all your version of spoiler, why did I find it different with my version? probably because the understanding of mtl
[ul]the royal family, archduke, his dad, and his grandmother know about olivia origin, but the dad and grandmother only know about the status but dont know about their power because istarica is located on another continent which is nearly impossible for their transportation tech to reach, but it is different for the royals and archduke because they have seen it or hear it in the past by sending their family to study abroad. so the dad and grandmother underestimated them.[/ul]
[ul]the only one who knows about the reason why olivia married into roundheart was the king. and that is to research about how to mine sea crystal beneath roundheart coastal territory. the king thought that it wasnt an important crystal because the different on the tech both country use, it is not important for heim kingdom, so the king redeem it as an advantage to have diplomatical marriage between both country. even the dad didnt know about that underwater mine. and later olivia found out about other mine in neighbouring country and has done a secret research about how to mine it.[/ul]
[ul]Ain wasnt created by combining the dad's DNA, but he was born only by olivia's root by stemming method, so later in the story ain doesnt have any familial feelings about roundheart family.[/ul]
[ul]the only one who knows about the reason why olivia married into roundheart was the king. and that is to research about how to mine sea crystal beneath roundheart coastal territory. the king thought that it wasnt an important crystal because the different on the tech both country use, it is not important for heim kingdom, so the king redeem it as an advantage to have diplomatical marriage between both country. even the dad didnt know about that underwater mine. and later olivia found out about other mine in neighbouring country and has done a secret research about how to mine it.[/ul]
[ul]Ain wasnt created by combining the dad's DNA, but he was born only by olivia's root by stemming method, so later in the story ain doesnt have any familial feelings about roundheart family.[/ul]