Eir Aoi is a japanese Singer and Songwriter from Sapporo, who had her debut 2011.
In her discography you will find songs from the series Sword Art Online as well as pieces from the series Fate/Zero and KILL la KILL.
"Ryusei" is the title song from Sword Art Online Alternative: Gun Gale Online and was realese as her 14. Single, together with the Song "Yakusoku".
This Edition is not imported from Japan, but an AKIBA PASS production especially for the german market!
3. Hitokakera no Yűki
4. Ryűsei - Instrumental -