The story takes place in a world where seven people with unusual powers are crowned as "kings," and revolves around the "bonds" and "fate" between the people involved.
After watching and really enjoying K's anime, I was very happy and excited to know that it had a manga adaptation ... I have to say that I am slightly disappointed. It just doesn't work, very weak and bad adaptation. They made interesting exchanges to not look exactly like the anime, some were interesting, but others broke the mood of the manga, and it ended up being very dull and boring. The anime's most powerful point, the action accompanied by an excellent animation, does not work here, the art is just very bland and boring. It's worth mentioning that the anime of K is a really well fluid show, but i have to say that the manga was able to turn the pace to something intolerable. It still has the cool characters but they feel really weak, and, in spite of everything: it doesn't even come close to anime.