Features documentary footage from the band's 12th anniversary oneman tour. The title is a play on the Japanese saying tsuru wa sennen kame wa mannen (*) {cranes live a hundred years, turtles live 1000 years}, which is a saying about longevity. In this case the band has added “and we've been devoted to this band for 12 years.” Interestingly, the watera* (わてら) in the title is an Osaka-dialect-specific word for “we.”