 Further two singles "Looking for" and "Gunjou" were released prior to the album.One of them, The Cure-esque "Gunjou" features Takuya Ohashi (a lead vocalist of the duo Sukima Switch) and Kana Uemura on guest vocals, and comedy double act Ungirls appeared on its promotional film.In terms of sales, "Sazanami" became the least successful album since their breakthrough in the 1990s; although it debuted at the pinnacle of the Japanese Oricon chart and has been certified platinum by the RIAJ.