
They said he was 12. A 12 year old can either be super mature or well, not at all. And I doubt he has been socialized well. He might not even had the chance to learn about the curse if his father kept it from him. Also as a prince he would be spoiled regardless and had every kid his age encouraged to play with him by the parents. This might be the first time another kid said no/stay away to him. If he were older I'd be more judgmental, but at this stage this is clearly all on his environment.
So he will hopefully change with enough time interacting with a wider range of people.

No. Gavielle is the crown prince. His father is the king.
http://iweb11.mangapicgallery.com/r/newpiclink/dad_is_a_hero_mom_is_a_spirit_i_m_a_reincarnator/12/9c6c21c7f36edd1d142db3c49c02b225.jpeg
Everyone be like crown Prince is gross
Me
What if he's just misunderstood? Like he had good intentions, but did everything wrongly and his face is also naturally creepy