"Number Six" is single by Alice Nine It was released on October 4, 2006, coinciding with the release of "Blue Planet".

[1] "Number Six" was created as a small film.

The regular edition had an audio of "Number Six", the music video and the making-of the film, while the limited edition had the music video for "Number Six", the small film, and the making of the film.

All tracks are written by ToraThe music video was written, produced, and directed by guitarist Tora.

[4] It incorporates scenes from the mini movie to that of with the band playing the music.