Brain Powerd
"Karma" was released only a month after Kokia's 9th and 10th studio albums ' and '. The single was her first release through anime retailer Lantis, as opposed to her usual release label Victor Entertainment. Kokia had released game/anime theme songs on a different label twice in her career: once through Victor Entertainment in 1998 while she was still signed to Pony Canyon ("Ai no Field" for anime Brain Powerd) and once through Marvelous Entertainment in 2008 ("Tatta Hitotsu no Omoi" for Gunslinger Girl: Il Teatrino).