People keep complaining when since almost the beginning it's been clear Eugene is the male lead. Just admit that even though you see it as "incest" you actually like it. Stop pretending to hate it when you keep reading.
It's pretty obvious they'll end up as more than siblings, the title, manhwa cover, novel cover, the romance genre and the fact that they made them be not blood related, anyone who has read this far should alredy know lol
I'll be honest, altough her dad seems really good and sweet, he should be more ambitious, clearly his daughter is in a position lower than the other children.. if I was him I would compete to be head of the family to at least protect my daughter and give her a higher position.
If the kid wants to be part of the royal family he really should be smart and attempt to get along with the obviously favored princess. It's so stupid to mistreat someone the Emperor holds dear.
It seems after all these years of Anisa purifying Lancer's aura, he's becoming more decent and a bit fond of her. I hope he'll be a good ally in the future.