Overall - A really enjoyable read with frequent updates.
Style - Not much to say here besides that it's easy to read and well told.
Story - Interesting but feels a bit rushed at a few parts, although those times are truly few and otherwise it has a nice pace. World is interesting and the concept of Elemental's makes the story much more interesting than many others I've read.
Grammar - Occasional mistakes and typically they are barely noticeable and don't affect anything too much. Does occasionally break the flow a bit but compared to so many other works this is really solid.(not really a problem, I'm just strict on grammar)
Character - Characters(side characters as well as the MC) are interesting and well fleshed out. Characters all stay in character and don't feel cliche or generic. No real stereotypes and character interaction feels natural.
TL;DR: Good story with little to nothing wrong and you should definitely read it if you haven't. Seriously just read it already!