Oh, I didn’t know about Blazing Teens and found both the 2006-2007 Chinese drama and 2015 anime (for some reason the Wikipedia page totally ignores the anime), I’ll have a look!
I wanna see some kendama action next! (well I was lucky enough to see some live kendama demonstration at Japan Expo, and even met a Genius (Tales of Symphonia) cosplayer with an actual kendama he got there too!)