The 14th episode of Kannagi never aired on TV, but will be in the 7th volume (Japanese) of Kannagi.
Technically, this is more of an OVA, but I guess it could be counted as an episode if it has some connection to the story from the original. But, who cares, it’s Kannagi so it’s going to be good.
Kannagi is all about a goddess, Nagi, who is transfered into a human body made from her tree. It’s more of a slice of life anime then anything, but it is still good. Maybe we can get a second season soon after this.