The opening theme song performer has been revealed for Sword Art Online Alternative: Gun Gale Online, an upcoming TV anime based on a series of spin-off light novels inspired by the Sword Art Online series.
The Sword Art Online Alternative: Gun Gale Online TV anime is directed by Masayuki Sakoi and features animation by Studio 3Hz.
Eir Aoi has previously performed theme songs for such series as Sword Art Online, Kill la Kill, and Mobile Suit Gundam AGE.