Aoi Eir is a Japanese pop singer signed to SME Records. She was discovered through Nico Nico Douga video sharing network.
Aoi has loved singing since she was a child, at high school period, she sung in a band she had formed. After graduating from high school, she gave up her music career but continued performing publicly. She was selected to sing the ending theme song for TV animation Fate/Zero, which was released as her debut single, titled "MEMORIA", on October 19, 2011.
She also performed songs on popular anime titles such as Sword Art Online, Kill la Kill, Aldnoah.Zero, Arslan Senki and others. And she also performed in prestigious Nippon Budokan Arena for two consecutive years, gaining more popularity in anime and music industryin both local and overseas.