It's the first serie I read where the ML is so undesired for no reason. I mean, he's got no severe flaw as a romantic interest nor as a person.
Still, I can't bring myself to ship her with him, as they are still in a moe siblings relationship.
And, the fact that Eugene's fiancee is part of the royal family will bring a headache-inducing big mess I don't wanna think about when they break the engagement...
In short, so many reasons to keep him as brother and really not even one to love him romantically... So why?
But, it will be exciting to see them wriggling around their feelings, confused about the tiny boundaries between affection and love.