I'm glad I reread it all, I had definitely forgotten a lot of the details.
My take is that Eugene might have some budding romantic interest in her, but it won't go beyond that. She doesn't see him that way, and Eugene has been very clear that he won't force them to do anything they don't want.
The only one she has shown to have any interest in that's not as a sibling is Johan.
Cabel must have some serious ADHD, our girl really has the patience of a Saint to be putting up with his antics all this time.
Eric is still as tsundere as ever, but at least he's mature enough not to act out as much as he did when young.
I do hope that Eugene eventually realises that he needs to work on his own happiness as well, I'm glad that his current fiancé seems like a good person so far, hopefully he can find happiness with her or with someone else. He's a good guy who deserves to be happy.