Greatest hits album from SPYAIR contains all the 14 songs released as single for the past four years, including "Genjyo Destruction (the main theme for "Gintama: The Movie: The Final Chapter: Be Forever Yorozuya")" and "Imagination (an intro theme for the anime series "Hikyu!!")." Also includes "GLORY," which has been exclusively available on YouTube, and an unreleased song.