''Sign'' is

FLOW Flow may refer to: Science and technology * Fluid flow, the motion of a gas or liquid * Flow (geomorphology), a type of mass wasting or slope movement in geomorphology * Flow (mathematics), a group action of the real numbers on a set * Flow (psych ...

's eighteenth single. Its A-Side was used as the sixth opening theme song for ''

Naruto Shippuden ''Naruto'' is a Japanese manga series written and illustrated by Masashi Kishimoto. It tells the story of Naruto Uzumaki, a young ninja who seeks recognition from his peers and dreams of becoming the Hokage, the leader of his village. ...

''. The single has two editions: regular and limited. The limited edition includes a bonus CD with extra tracks, a wide cap sticker, double-sided jacket, and Sharingan sticker. It reached number 4 on the

Oricon , established in 1999, is the holding company at the head of a Japanese corporate group that supplies statistics and information on music and the music industry in Japan and Western music. It started as, which was founded by Sōkō Koike in N ...

charts in its first week and charted for 6 weeks.

Track listing

Limited edition track listing

Bonus DVD track listing

References

2010 singles 2010 songs Flow (band) songs Ki/oon Music singles Naruto songs {{2010s-Japan-single-stub