In...cest? Did I miss something???

Lol The reason why that one child who cries tears of jewels was hidden away is because the blonde older sister had ran away after rejecting the idea of marrying her cousin. It was explained that because that families powers are weakening they thought that they could strengthen it through incest. However that’s clearly incorrect since older sister ran away, had a love child, and he’s literally crying gems/is going to be the new head

Ohhh ty for explaining it