The main plot of K revolves around several clans, each run by a king associated with a color. After a murder takes a place, a video is released showing the murderer to be the slightly air-headed high school student, Yashiro. You can imagine some people were a little pissed at him.
Anyhow, the plot line in and of itself wasn't exactly original, it still wasn't your everyday stroll in the park. The anime is still very intriguing, and difficult to resist cannon balling. The plot wasn't exactly executed greatly, especially in terms of pacing, but it still revolves around the characters nicely.
One may argue concerning the clash of genres, but in my opinion, I believe that the genres complimented each other well enough. The show didn't appear to force anything in, and so I believe that the abundance of genres was merely due to the fact that it was just how they wanted to execute said plot line, and I don't believe they could have taken much out. That being said, they could have organized and paced everything much better.
Art: 9
The art in K is absolutely gorgeous, there's no denying. The animations are fluid, the colors are vibrant, the backgrounds are detailed, and the effects are gorgeous. The action scenes were all very well done, and the animation style did fit the show nicely. It truly was beautifully animated. Props to GoHands.
Sound: 9
As with the art, I believe sound was very well done, although I'm extremely biased because all of the music was right up my alley. I have a several songs on my iPod. And have been listening to them on repeat for like, days. Anyhow, yes, the soundtrack is pretty fantastic. In my opinion. It goes nicely with the anime and really helps with some scenes. The voice acting is also fantastic, portraying the characters very well.
Character: 10
So, I'm totally going against so many reviews with this one. So yes, some of the character development isn't very well done and is slightly bland, but considering the massive cast of characters and there being only a thirteen-episode arc, I don't see how they could have done much better without focusing entirely on only one or two characters.
The characters are definitely what I really loved about K, though. Something that has always appealed to me in anime's are a diverse, larger cast of characters. Angel Beats! And Durarara ! are some of my favorite anime's just based around that one fact.
So what happened when I watched K, was that I was critically judging the not so good storyline, but then all of the characters came along. And I kinda fell in love. HOMRA's (the red) clan was pretty much my drive to watch the show, and Scepter 4's (the blue) did a fantastic job of scaring me. Well, Fushimi did. Mi....sa....ki?
The characters may seem difficult to relate to at first glance, but they are all completely tragic and with their own flaws. That being said, I couldn't hate anyone.
K might have just used various cliches and stereotypes, but does it mean I love characters such as Mikoto and Yata any less? Nope. Still love 'em.
Enjoyment: 9
Now, this is where things get complicated. Although this show isn't 'technically' good at all, I still enjoyed the hell out of it. I also cried. So this is me subtly bring up the ending, because I bawled, and then I watched it fifty more times. To be honest, that ending may have made jaded my entire opinion of the show. Because that was one of the most freakin' beautiful endings I've ever seen for an anime.
But yep, definitely enjoyed K.
Overall: 8
My comments for overall are basically the same as my comments for enjoyment: it's technically lacking and mildly cliched, but I still couldn't help but love it.
