Funky Days!

Bonuses with the single included one of five possible trading cards, a URL in which fans could download a specialized wallpaper or screensaver, and a Lead 2003 Summer Campaign postcard.

was released three months after their debut studio album Life on da Beat on July 30, 2003.

[2] The single was released as a standard CD and came with three bonuses: one of five possible trading cards, a URL where fans could download a Lead-themed wallpaper and screensaver, and a Lead 2003 Summer Campaign postcard.

[5] Atsuyuki has written lyrics for the comedy group No Plan, who occasionally perform music, Mitsuo Iwata and Abe Natsumi.

The coupling track, "All My Life ~Manatsu no Umi Monogata~," was written and composed by Yasushi Sasamoto, who worked with Lead on their previous songs, "Manatsu no Magic", "Show me the way" and "Fly Away," and who composed much of the music from their Life On Da Beat album.