"Aiaiai" is a song by Japanese singer-songwriter Miliyah Kato from her sixth studio album, True Lovers (2012). The song was written by Kato, who handled the production alongside Yoshiaki Ohnishi. The song served as the theme song for the Canadian-American television series The Firm in Japan, which was aired from 5 June 2012 on AXN Mystery, one day ahead of the single's release date. The single was released for the two versions of CD and digital download on 6 June 2012 through Mastersix Foundation as the third single from True Lovers. Ahead of the official release, the short version of the song was released on 16 May 2012 as a ringtone.
