iKotomi
[10] Knight
I find the most annoying thing Natsu has is her ground bomb and lows, but you can jump over it or low block. When you low block the bomb expect a teleport and as soon as she comes out of teleport I land rising K. I also notice you wanna be mid to close range against her so you have some time to react to her moves. If your too close she may out hit you because she's so fast.
236B:4. Don't let any whiff or unsafe move go unpunished.