Any royalty themed shoujo manga???

- Zettai Heiwa Daisakusen (very cute; I think it’s not what you have in mind but also exactly what you’re looking for, if that even makes sense, haha)
- Special A (the plot for this is towards the end and there’s a bit of a plot twist with the prince)
- Ludwig Kakumei (in a loose sense; I mean, it revolves around him being a prince but I’m doubting this is quite what you’re looking for. Still an amazing manga though idk why it’s considered shoujo tbh lol)