There are no CoC trails from Kuzan's hands before initiating his attack =>
Unless its stated explicitly, Kuzan didnt use CoC here
![](https://i.postimg.cc/xd4Jthfp/Capture.jpg)
Unless its stated explicitly, Kuzan didnt use CoC here
And, the clash had that sparks. We have seen such sparks along side explosion when there is clash of CoC.