Seiji Kameda
This mini album, intended to be the band's final studio release, includes one song written by each band member, including Toshiki Hata's first composition for the band and the first time Seiji Kameda wrote lyrics for his own song. In addition, the lead vocals on "Kai Horror Dust" and "Honto no Tokoro" were provided by the songs' respective composers, while Ringo Shiina played drums on the latter track. As in "Dai Hakken", each song title is made up of seven characters.