MihimaruGT is a Japanese pop duo formed in 2003 by hiroko and miyake. Signed to Universal Music Japan, the group debuted on July 30, 2003 with the single "約束" and built its early career through street performances, live houses, and clubs. It also performed "H.P.S.J.," the ending theme for Bobobo-bo Bo-bobo.
The duo's breakthrough came on May 3, 2006, when "気分上々↑↑" became a major hit after being used in a hair-color commercial, leading to its first appearance on MUSIC STATION. The song also brought awards at ベストヒット歌謡祭2006, 第39回日本有線大賞, and 第48回日本レコード大賞, and took the group to its first appearance at the 第57回NHK紅白歌合戦. MihimaruGT returned to NHK紅白歌合戦 in 2007 with "俄然Yeah!", closed a national tour with a 日本武道館 concert in 2008, resumed live activity at 横浜アリーナ in 2010 after a long break, and entered an indefinite hiatus on December 31, 2013 after mihimaLIVE2013 10th Anniversary Live〜渋谷公会堂公演.
