Aoi Eir will be releasing her 14th single "Ryuusei / Yakusoku" on June 13.
The new single will be her first since coming out of hiatus and resuming her activities in February.
"Ryuusei" has been picked up as the opening theme song to the anime series "Sword Art Online Alternative: Gun Gale Online". The series will begin airing in April.
3 versions of the single will be available upon release: a Regular Edition (CD-Only), a Limited Edition (CD DVD) and an Anime Edition (CD DVD).