King of fighters Kyo is a manga more enjoyable for people who had played KOF series and specially had played KOF Kyo for playstation. Otherwise probably you will feel bored and you will not understand what is going on because the whole storie has to much characters with different side stories. So If you really want to enjoy this manga, I suggest you to play the videogames series for Arcade (such as KOF95-96-97) and you will understand better what is the matter with Orochi and all that stuff. I like the art to much because is full of details and strong lines. I think the authorpaid a lot of attention in the use of ink, so it's pretty good in my opinion :)

As a conclution, read it, but be sure you had played the games or at least you have an idea of the whole plot of KOF.