I only got to play Kazunoko about ten or so games. He was needed at his pools but I was able to absorb a lot playing against him. As for how the sets went, I didn't get a set but I took rounds.
While I was playing Kazunoko I noticed something he would do quite often. As soon as you started to get a feel of his next move he'd make another move. It was as if he didn't want me to think or even give me the slightest hint to his next move.
My motive was to get a life lead and make Kazunoko come to me. If I got him knocked down I would do a mix-up on him. Essentially, everything worked out as planned but as soon as I was cornered it became that much harder to maintain that life lead. I was able to make some reads and punish him with big damage. However, Kazunoko was able to make reads on me, as well, and punished me with big damage.
In the end, I lost (what seemed to be) 0-10 in casuals against Kazunoko.
Luckily, there was a translator available there for me to ask Kazunoko what I did well and what I didn't do so well. The translator explained to me that Kazunoko felt my pokes were good (frame traps and counter pokes against Yun), but that I tend to try to poke when I had a life lead. With that being said, the translator continued saying that I shouldn't poke once I had a life lead. The translator finished saying that Kazunoko thought I was doing fine.
Overall, I felt I was doing fine. I was just missing some key elements. Those elements were match-up experience against Yun and Kazunoko's play-style with Yun. It's one thing to know the match-up of a character, but it's also another to know the person. With that being said, I felt if I kept playing Kazunoko I would do better and eventually be able to take him down more consistently. :)
P.S. Moral of the story: Stay confident in yourself and trust your character!