This is totally not my cup of tea. I spent most of the book afraid there would be way too many gory details about the pregnancy/birth. However, I was pleasantly surprised this was not the case.
Rin is sweet and innocent, having been almost completely sheltered by his father for all of his life. Merin is the king who takes Rin as his spouse in order to hopefully gain a child, thereby preventing war and securing peace between their respective kingdoms. Merin is patient with Rin, but they just about fall into instant love and trust which felt very rushed.
There are attacks against Rin, magic plays an important role, though I never completely understood the ramifications of that and the birthing and children/parent survival.
So, all in all, it was a somewhat interesting story, but I think my fear of the mpreg aspect prevented me from really enjoying it, though it was well written.