Rule / Sparkle by 浜崎あゆみ

"Rule/Sparkle" is a double A-side single by Japanese recording artist Ayumi Hamasaki from her tenth studio album, NEXT LEVEL' (2009). The song was released on a CD and DVD format on February 25, 2009 as the second single from the album. With "Rule" composed by Miki Wantanabe and "Sparkle" composed by Kazuhiro Hara, both songs were written by Hamasaki and produced by long-time collaborator Max Matsuura. "Rule" was used as the international theme song for the 2009 film Dragonball Evolution. "Rule/Sparkle" received mixed reviews from most limited music critics, some of whom favoured "Rule" over "Sparkle". Released in Japan and Taiwan, it peaked at number one on the Japanese Oricon Singles Chart, becoming her thirty-second number one single on the chart. The song was certified gold by Recording Industry Association of Japan (RIAJ). To promote "Rule/Sparkle", Hamasaki performed the song on several Japanese television series. It has also been included on several tours and countdown live shows conducted by Hamasaki. A music video was directed for each song.