Despite being written by a completely different author, this book was almost a copy of Up for Heir (book 1 in the Rosavia Royals series) in so many way. There was the same prince & commoner dynamic, with the same "gorgeous, kind, sexy prince swoops in to make everything better and starts spoiling the commoner rotten" trope. The commoner is, once again, responsible for a younger family member, although it's just one niece this time and not a bunch of siblings. The commoner also has taken a big hit to his self-esteem recently thanks to a shitty ex who broke up with him in a shitty way. There's the same type of insta-love, based on little more than "I saw him, and there's something about him, can't stay away." There are even similar long-winded inner monologues in every chapter, although mercifully, in this book the characters manage to mostly stay on track instead of getting off tangent every paragraph. 

The only thing that strongly distinguishes this story from the first book is the hidden identity twist. Otherwise... Even Cas's initial deal/the starting point of his arc is weirdly similar to Leo's from the first book, since both are centered a lot about the responsibilities that come with being part of the royal family. Yeah, Leo was more, "Responsibility sucks, I never asked for this, so I'm gonna live for myself as long as I can!" And Cas is more, "Responsibility's tiresome, but I'm still going to shoulder it... until I get too tired and then I'm gonna go off and live for myself a little."

There are actually a lot of super sweet moments in this book. It's all wish fulfillment and fluff, except for a few angsty moments here and there that reliably get resolved with more candy-sweet fluff. The characters are for the most part kind and nice,  the fake European country this story takes place is full of beautiful, opulently described places, and the story hits all the beats of a modern fairy-tale. Sometimes, I need that kind of stuff to lift my spirits. I'm sure I would have liked it better if I wasn't familiar with Up for Heir. But outside of the hidden identity trope, it's almost like parts of the books were written from the same outline, and I kind of expect a bit more variety in a series!