This is quite good. Not at all one of the same-sy shoujo fantasy adventures that've been going around (much as I've been enjoying those), even if it makes use of many of the same building blocks.
A lot of this actually strikes me as rather old-fashioned in tone—say, perhaps, in the tone of fantasy novels from the 70's that were looking back at even older things—in a good way. The heroine gives off the air of a shining chivalric hero, played totally straight-faced (but with associated heroic flaws). The romance, such as there has been, is a mix of intrigue and impassioned glances, words, and gestures; it does not so much sparkle or go doki-doki, but swooning might not be totally out of the question. And, crucially, it brings the grace to these things to make them actually work (as they so often didn't in their heyday).
Despite that, this definitely feels like something written today. A lot of the various tropes employed here are pretty familiar to the popular shoujo fantasy stuff of here-and-now. But they're in disciplined service to the plot, here, never thus far even a hint of any sort of ad-libbed filler to keep things rolling.
It's not that I feel like I'm reading a masterpiece, as such, it's more like the feeling of watching forgotten craftsmanship. ...Gods, do I sound old. XD
Anyway. I'm probably not doing the thing full service here. This is really it's own thing, and it's good! (So far.)