Ai Kago
"Ai no Dai 6 Kan" contains three hit singles, all released prior to the album between April and December 2004: "", "Joshi Kashimashi Monogatari", and "Namida ga Tomaranai Hōkago". Ai Kago and Nozomi Tsuji (who graduated from the group in August 2004 to continue with their duo W (Double You) full-time) perform along with the other 12 members of the group at the time on the first two aforementioned tracks, recorded and released as singles when they were a part of the group, and on "Ship To The Future", a song from Morning Musume's Spring 2004 Musical "Help!! Atchii Chikyu o Samasunda". Another album track, "Help!!", is also from "Help!! Atchii Chikyu o Samasunda"; a slower version of the latter was recorded by band members Rika Ishikawa and Sayumi Michishige under the name Ecomoni and released on the compilation "Petit Best 5".