Too much theological supernatural information for me, there's not explanation for any of it, and nobody knows what's happening, the different spirits in the story seems to be just as confussed as the reader is.
So the main story at the beginning is just a mean for a lot of cliche chapters, cooking contest, popularity contest, manga convention, beach trip, cultural festival, when there seems to be a little development is just a false alarm, so it doesn't go anywhere until the last releases.
Nagi's design is really good, genuine, is what gives personallity to this manga. I like the art. On the other hand there's a little lack in the facial expression department at the beggining, but later on the author seems to improve about that.
I like Kannagi, don't get me wrong, there's a tender feeling about it, Takenashi Eri nailed that, and the artwork is good, but with the weird pace and the excess of unexplainable turns of events i find myself lost too many times, it takes some effort to follow the story for me.
Manga is just another way to tell stories. The artwork is key, the originality is important too, but transmitting the story to the reader is just fundamental, it's a given, it's a mean to comunicate first of all.