I'm totally happy with this book. I was waiting for more from Karen Marie Moning about Dublin and the Fae and we got it finally! 
 First, let me say I would HIGHLY recommend this book as a bit of Fantasy that is set in our own world. It is fantastic! BUT! Read the Fever series first. You can start with this series but there are things you will spoil for yourself because you are going to want to go back and read the Fever series (below). There are a few things Dani refers to and characters you are introduced to in the Fever series that you may have a little trouble getting to know in Dani's Series. This is a continuation of the Fever series. Get it? *wink* 
 Okay so I loved Barrons so much in the Fever series and wasn't sure I could love Ryodan as much because well... he's not Barrons. Plus I know there was a lot of expectation with the fans about how Dani and Ryodan would play out and I'm positive fans wanted them together. I'm slightly guilty on that part. The thing is that in the book Dani is 14 and Ryodan is not. So as you can tell that just can't happen.... but then this is just the first book so who knows what KMM is going to do? 
 Now here is the thing, Ryodan IS very hot. He's just as gruff and domineering as Barrons but it is different and it is actually kind of hard to explain. Barrons was more, "judge me on my actions," whereas Ryodan is more of a "I do whatever I want" kind of guy and you can almost see the workings of his mind. He'll be the first to tell us that he doesn't have a responsibility to help anyone and he only helps when he knows it will be in his favor but then you see his subtle prodding to almost line things up how they should be. But it isn't like he's this totally secret good-hearted guy. Sometimes you just want to smack him. And yet he's so fecking hot. Plus there is all the allusion he makes about the future and Dani and how things will end up. It's a little maddening but so fantastic. 
 Then there is Dani. What a complex character and I think it is all because she's a teenager with teenage emotions. She's a total superhero but she's angsty and moody and is naive in the fact that she doesn't understand any of the relationship queue's being hurled at her. And then she's this smart sassy girl who could probably figure out anything she sets her mind to but her life has been hard and despite her protests that it doesn't skew her view of things, it clearly does. And apparently has a trio (at least) of men who view her as their possible future. 
 My one real issue with the story is something very minor. Dani runs, literally, on sugar which is scarce. KMM is going to have to figure something out with that because Dani can't keep being super if she crashes and has no energy to actually fast-mo. 
 Then there are the 7. We only really get introduced further to one other and that is Lor. He seems fun enough but deadly when necessary and despite his earlier impression of Dani, I think he enjoys her brand of thinking. Lor is also a ladies man and I'm thinking he's going to become more prevalent. 
 What about Christian? As one who read KMM's original series (Highlander series) I'm a fan of MacKeltar men. They are steamy in there own right so I did enjoy Christian even though he was a pale comparison to Barrons. Still I think KMM stepped it up for him as he's slowly turning to what he dislikes most and seems to have this fascination with Dani. Things are definitely getting interesting. 
 Not only those characters but we are introduced more to a couple of Sidhe-Seers named Jo, Kat and Margery. Kat is the current leader of the Sidhe-Seers and has a hell of a time getting acclimated especially now that V'lane/Cruce is down in her basement (kind of). She also has to deal with Margery who is clearly sinister and will probably be a thorn in everyone's side later on. 
 Now, Jo. I really can't tell you anything about her because it would spoil everything but wow. 
 Word of warning. Do not flip to the back of the book and read the end, if you are so inclined, because you will ruin the story. Seriously.