Yes it's the prince, but he is truthfully actually really kind, genuine and awesome. He has her back all the time and trusts her completely, AND he respects her autonomy and that she has her own wants and desires. He has become one of my favourite MLs in the isekai genre - and I don't like the asshole prince archetype. So look forward to getting to know him!
The other guys... well some are better then others, and some are just the worst. The absolute worst.