Let's start with the things I agree with, which is, actually, just one thing: the story. I will admit that the story is not really good and a bit rushed, but it's easy to follow and it IS a story, not like in other animes in which you can sometimes find 9 episodes without the story even mentioned. In K, the story goes on in every episode. While there should've been more episodes to explain in more detail and give some more backstories, there'll be a second season and I have the hope that maybe they'll explain something there.
Time to move on. The art, which I really really liked. The drawing is good and pretty detailed and the animations are also well made. That's why I liked the fights. To be honest, other than that, I thought that the fights were a bit boring since nothing much happened. But for me, a person who pays more attention to the characters, this wasn't much of a problem.
I can't say much regarding the sound. Throughout the anime, I thought that it fit in well. Also, even though I liked the opening, it could've been better. But it WAS good.
Despite us not getting that much information (as I said, looking forward to the second season) I really liked the characters. I also think the interactions between the characters were good. Not that it is of any interest, but I want to say that Yata is my favorite character. I really want him and Fushimi to make up.
I gave the enjoyment an eight, not really because of the story but because of the art, the characters and, probably, the sound. I know that everyone has their own opinion, but I recommend the anime. I was really sad when it ended and I'm looking forward to the second season to get some more interactions between the characters and some more backstories. And maybe they'll find the missing story somewhere. ^-^
