Hmm.. That's an interesting question. I think I would like to manipulate with air. If you are nice, I would give you comfortable breeze in this hot weather. But if you are rude, you would get hurricane in your face :3
The plot is starting interestingly. There's not many characters, but with every chapter they add up. But I hope, author will write more about them in plot. Writing gets better with every chapter too, so..
I am waiting to see more of it ^^