Hello! I'm ~Lioness-Lindsey, and I've decided that, for my very first critique, it should be this stunning piece of yours.
First off, I just gotta say: Wow. The way you colored this, namely the fluidity and motion of the lines as well as the color scheme itself, is really brilliant. It looks like they're just going to leap out and fight at any moment. The sharp and blurry lines also really help with that, which I thought was clever of you to do. As for color, I like the red scarf/dragons you have on and around Ai, and how it too feels like it's moving. Along with that, I think how you kept the background a neutral color was a smart idea and it really made Ai and Kaze stand out in this.
Also, I love the elements of light and dark here. The darkness of Kaze's outfit contrasts well with the ball of light in Ai's hand as well as the diagonal stream of light from Kaze's hand.
There is only small issue I have with this. Since it's Ai versus Kaze, I feel like they should be looking at each other. That's just a personal opinion really, and it doesn't really affect how I really like this piece.
All in all, this is really excellent and you've done a wonderful job here. Have a great day!