I mean...RH shifter omegaverse (with no knots) that leans in hard on the primal kink. It is what it is, does it well, and doesn't try to be something that it isn't. 

My only complaint--and I think I understand that it was done to set up the rest of the series--is there are a lot of 'side plots' thrown at us that either feel neglected if not downright ignored. I'm undecided if I'll continue with the next book.