band's following video albums, Sakanaquarium 2011 Documentaly: Live at Makuhari Messe, Sakanaquarium 2013 Sakanaction: Live at Makuhari Messe 2013.5.19, and Sakanatribe 2014: Live at Tokyo Dome City Hall. It also makes an appearance on their digitally exclusive live album Sakanaquarium 2012 "Zepp Alive" (2012). Cover artwork The cover artwork is an actualisation of the song's message of questioning the nature of self-identity. It features a question mark design created by stacked copies of Sakanaction's previously released CDs, created by designer Kamikene of Hatos. The iTunes Store edition of the single featured an alternate take of the artwork, seen from a different angle. Music video The music video was directed by Hisashi "Momo" Kitazawa. Kitazawa had worked as the band's stylist since the release of their song "Sen to Rei" (2008), however had never worked as a music video director before. Kitazawa was asked to direct the music video during meetings discussing the music video project, when generally Kitazawa was the person who contacted directors to work on the band's video projects. After worrying about the idea for two days, Kitazawa accepted the offer. The band shot the music video on June 25, 2010. The video features scenes of the band performing the song in a dark room, back-lit with a series of fluorescent tubes. The members wear black and white clothing, and in other scenes are shown individually against a background of black and white patterns. In the latter half of the video, the camera slowly pans out, revealing that the video is actually being broadcast from the screen of a pachinko machine. Kitazawa gave the video a pachinko machine motif, and aimed to create an entirely different image from the band's previous artistic videos. Kitazawa was inspired by pachinko machines, strongly associated with a "dirty mood" as they are gambling devices, however when seen outside of context are innocent game cabinets. Kitazawa felt that how the identity of what a pachinko machine is changes depending on the conceptions of people, and that this expressed the messages of the song well. Kitazawa was inspired by the chorus lyric identity ga nai to create a video primarily in grey sale, and focused much of the video on light and shadow. The Kino Flo fluorescent tubes used on the band performance scenes of the video were made to resemble fish bones, relating to the meaning of the band's name in Japanese. The