she performed the ending theme of the first two episodes of "space battleship yamato 2199" titled, . on the july 17, 2012 broadcast of "nozap・matsunaga maho no live dog!", she announced her previous work as fictionjunction asuka, who provided the vocals for "everlasting song", an insert song used in the anime "elemental gelade". prior to her debut as aira yūki, she was signed on to zazzy, one of being's independent label. she sang jazz covers of songs by seiko matsuda, shikao suga, joni mitchell, carole king on itunes japan as . at the end of 2007, her songs, "sweet memories" and "it's too late" were picked as the best songs for the jazz category for both japanese and western songs. under asuka katō, she had released seven singles and one album.