The single is the second opening theme for the anime, Fullmetal Alchemist: Brotherhood, and became one of the most popular songs by the band. In addition, it was used as the ending theme for the final episode of Brotherhood.
The B-side has two songs: "Fujjin" (theme song of the movie Kanikousen, also a song from the album Aurora) and "Aitai kimochi" (an unreleased song).
- Category: 2009 singles
- Category: Nico Touches the Walls songs
- album: Aurora (Nico Touches the Walls album)
- genre: Alternative rock
- genre: Power pop
- musicalArtist: Nico Touches the Walls
- musicalBand: Nico Touches the Walls
- performer: Nico Touches the Walls
- previousWork: Big Foot (Nico Touches the Walls song)
- record label: Ki/oon Music
- recordLabel: oon Music
- releaseDate: 20090812
- subsequentWork: Kakera: Subete no Omoitachi e