I honestly adored the couple in this one. Their dynamic was super unique to those featured in books #1 and #2. Aehako as a romantic interest won my heart and soul. The reason this one is getting 3 stars from me, even though the couple is my favorite so far, is because the story arc for this one just wasn't as compelling as it was in book #2 (which reads as a Beauty and the Beast retelling). I also was a bit disappointed with one aspect of the book's conclusion, and I'll explain it for those who don't mind spoilers:

One of the major conflicts in the story is that Kira is infertile due to medical issues from her childhood. As a childfree person by choice, I really liked how much depth Kira's character added to the series since the world that Dixon built is very much mating/childbearing-centric. So, I was really disappointed when Dixon threw in a "miracle" at the end in which Kira's infertility has been healed so she and Aehako now resonate for each other. As someone who chooses to be childfree, as opposed to someone who is childless without a choice in the matter, I can only speak from my perspective. But I did find it a bit insensitive.