There's some bits in this that feel decidedly un-shoujo-y, in that the authors take on things sometimes (definitely not always) has a bit more of an air of realism than the genre normally entails (the well-thought-out-sounding, low-magic setting that's laid out tersely on the first page of the first chapter; the way the royals that we're supposed to sympathise with are not above death-threat-ultimatums when they want to get their way; the way the prince is kind of annoying and not exactly prince charming in a way that makes sense with the background they give him, that sort of thing)
I don't want to overstate it, but it's subtly defied the directions I expect these fantasy-romance tropes to go in, a couple times so far.
On the other hand occasionally the human interactions, or bits of worldview and logic, feel awkward and ham-handed as one might have come to expect from this sort of title (y'know, books-where-the-title-is-the-plot-summary, wherein you have to periodically stop and think to remember again whether this one was an isekai or not.)