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Ryuusei / Yakusoku

Limited Edition Cover
Regular/Digital Editions Cover
Anime Edition Cover
Aoi Eir
Ryuusei / Yakusoku (流星/約束)
Catalog Number
VVCL-1252~4 (Limited Edition)
VVCL-1255 (Regular Edition)
VVCL-1256~7 (Anime Edition)
¥2,160 (Limited Edition)
¥1,296 (Regular Edition)
¥1,728 (Anime Edition)
¥1,600 (Digital Edition (Hi-Res))
¥1,000 (Digital Edition)
CD Tracklist
  1. Ryuusei (流星; Meteor)
  2. Yakusoku (約束; Promise)
  3. Hitokakera no Yuuki (ヒトカケラの勇気; A Piece of Courage)
  4. Ryuusei -Instrumental- (Limited/Regular/Digital Editions)
    Ryuusei -TV size ver.- (Anime Edition)
DVD Tracklist
  • Limited Edition
  1. Ryuusei Music Video
  2. Yakusoku Music Video
  • Anime Edition
  1. TV Anime Sword Art Online Alternative Gun Gale Online Non-Credit Opening Movie (TVアニメ「ソードアート・オンラインオルタナティブガンゲイル・オンライン」ノンクレジットオープニングムービー)


"Ryuusei / Yakusoku" is the 14th single (16th overall) released by Aoi Eir, her first double a-side single and her first single under Sacra Music, a Sony Music Entertainment sublabel. It was released in three versions: a limited CD+DVD+Photobook edition, a regular CD only edition, and a limited CD+DVD anime edition. The song "Ryuusei" was used as the opening theme for the anime Sword Art Online Alternative Gun Gale Online, it is her fifth song for the SAO franchise and it was released as digital single on April 22nd, 2018. A short version of the music video for "Yakusoku" was released on YouTube on February 7, 2018.

Oricon Chart Positions

Aoi Eir promoting the single
Mon Tue Wed Thu Fri Sat Sun Week Rank Sales
- 9 6 6 6 8 8 8 13,634
11 31 22 19 15 20 16 19 3,062
20 46 33 x x x x x x
x x x x x x x x x
Year Month Rank Sales
2018 June x x
  • Total Reported Sales: 22,567

External Links