@reu It's not that there is anything spoiler related at all about how so many readers dislike the prince, it's more about his behavior and actions so far. At the very least is that the Prince most definitely has an Oedipus Complex (aka MOMMY ISSUES ala Pornhub 🤢) and is actively homewrecking Nora's family life by being the "perfect son." Probably trying to make himself feel better about the glacier-like relations he has with his father and the empress. I'd bet anyone $5 he resents his little brother too., but we don't know the Baby Prince's very well yet, so we'll see.
Nora has a bit of a temper and likes to have fun by skipping lessons when he can "escape". Nora is a Teenager, of course he wants to skive off class now and again, especially when he's a teenage noble who doesn't get much choice, if any, in what's on his time table. Nobility, especially children, didn't really have that much personal freedom. Shuli's family isn't the norm, but they can get away with it a bit more due to rank, but even they have a schedule to keep. And wouldn't you want some time to yourself if you lived in that toxic ass house?? The prince (whose name I've already forgotten lol) is actively undermining Nora's relationships with his parents. Admittedly, they don't seem to have been very good at the start anyway, but who knows how long Prince Whats-his-name has been doing this? Years, probably.
The prince is also being pretty Yandere about his affections for Shuli, even if you disregard that she looks like his mom. He keeps following her around and stuff even after she did her best to reject him without causing a scandal or insulting the crown. He is being deliberately obtuse and putting Shuli on the spot in front of literally hundreds of people, including the Emperor. He is manipulating the situation to his benefit. This would normally be fine and understandable since he likes her and wants to spend time with her. Except he is out loud asking her, a recently widowed Marchioness with 4 CHILDREN, to go with him, a PRINCE, to a dark, romantic, secluded, and (more importantly) RESTRICTED library.
Princeling is not an idiot. He is very aware that this at the least will cause rumors to fly. Something probably sparked just by him choosing to dance with her when he should have only danced in the finale. If any of those books get damaged or stolen, it won't matter that he gave her permission to be in there. At most, it could affect her and the kids' standing amongst the nobility and dishonor their family, maybe even worse. He probably doesn't care about the potential consequences very much, if he cares at all. He's the Prince, he Gets What He Wants. And what he wants is Shuli.
I'm very concerned about what his reaction will be if she rejects him a second time, which what I think is about to happen.😱 Yandere don't like it when they get rejected, especially if there's an audience.
So yeah, that's why most of the readers don't like the Prince lol. Sorry for the rant, I have many, many Opinions.