Do not attempt to panko bread and deep fry your yoyo. Your yoyo is not some shrimp or vegetable that you can make into tempura. The result will be a charred yoyo covered in globs of weird oil, and youll cut up your mouth really bad when you try to eat it. So save yourself the risk of looking like a weird dying zombie with blood pouring out of your mouth and dont deep fry your yoyos for yoyo tempura.
Bake them into a fritter instead.