Supercell is the eponymous debut studio album of Japanese J-pop band Supercell, released on March 4, 2009 by Sony Music. Supercell had originally released a dōjin (independent) version at Comiket 74 on August 16, 2008, before the band signed a record deal with Sony Music. The album contains twelve music tracks written by Ryo and the singing synthesizer Hatsune Miku was used to provide the vocals.

Black Rock Shooter is a Japanese media franchise based on characters created by illustrator Ryohei Fuke, also known as Huke. It revolves around its eponymous character, a mysterious black haired girl with a blazing blue eye. The original illustration inspired a song of the same name by Supercell featuring the Vocaloid Hatsune Miku, which gained popularity on the Nico Nico Douga website.