One Light

 is the 18th single by Kalafina. It. One Light was used as the second ending theme for the anime Arslan Senki.

Limited/Regular Edition CD

 * 1) One Light
 * 2) Mahiru (真昼)
 * 3) Samidare ga Sugita Koro ni (五月雨が過ぎた頃に)
 * 4) One Light ~instrumental~

Analog Record/Anime Edition CD

 * 1) One Light
 * 2) Mahiru (真昼)
 * 3) Samidare ga Sugita Koro ni (五月雨が過ぎた頃に)
 * 4) One Light ~TV size~

Limited Editions Blu-ray/DVD

 * 1) One Light (Music Video)

Anime Edition DVD

 * 1) TV Anime "Arslan Senki" Non-credit Ending Video

Featured Members

 * Otaki Wakana
 * Masai Hikaru
 * Kubota Keiko

Single Information

 * Catalog Number:
 * Limited Edition A: SECL-1741~2
 * Limited Edition B: SECL-1743~4
 * Regular Edition: SECL-1745
 * Anime Edition: SECL-1746~7
 * Analog Edition: SEJL-28
 * Lyrics: Kajiura Yuki
 * Composition: Kajiura Yuki
 * Arrangement: Kajiura Yuki
 * Guitar: Korenaga Koichi
 * Bass: Takashi "Jr" Tomoharu
 * Drums: Sato Kyoichi
 * Strings: Konno Hitoshi Strings
 * Chorus: Kaida Yuriko

Oricon Chart Positions

 * Total Reported Sales: 11,708*