My bro asked me to chart this, and I used to like FLOW songs a lot when I was a kid, and also used to watch Naruto lol
Nowadays I don't, but charting this was really fun, it was also short so it didnt gave me too much trouble

Naruto Shippuden Opening 6 - Sign by FLOW
Vocals: Koshi Asakawa
Composer/Writer: Takeshi Asakawa
Chart by AegbGo