Kitty GYM was a temporary Japaneseidol unit formed in 2006 to promote the2006 FIVB Volleyball World Grand Prix.^[1] The group consisted ofTomohisa Yamashita ofNEWS, Thai pop duoGolf & Mike, and members of theJohnny's Jr. groupKitty [ja] (Hiromitsu Kitayama,Kei Inoo,Shota Totsuka, andHikaru Yaotome). The name of the group came from the first letters of the members surnames, and the Thai memberspseudonyms.

On July 18, 2006, GYM (Golf, Yamashita, and Mike) held an event at theNHK Hall and performed "Fever to Future" for the first time.^[2] "Fever to Future" was used as the image song forFuji Television's broadcast of the 2006 FIVB Volleyball World Grand Prix.^[3] They made their first appearance as a 7-member unit on August 19, 2006, at theAriake Coliseum, where they performed "Fever to Future" to a crowd of 10,000 fans.^[4]

The group released their only single, "Fever to Future", on August 30, 2006.^[5] It included a solo song by Tomohisa Yamashita and a duet by Golf & Mike.^[6] Released under the name "GYM", the single debuted atop theOricon Singles Chart on the week ending September 11, 2006.^[7] In the same month of release, it was certified Platinum by theRecording Industry Association of Japan for shipments of 250,000 units.^[8] It went on to sell over 300,000 copies, making it the 25th best-selling single of the year in Japan.^[9] The single was released in Thailand on September 6, 2006, and in Taiwan on September 12, 2006.^[4]

Since their disbandment, all members have gone on to have successful music careers. Kei Inoo and Hikaru Yaotome debuted as members ofHey! Say! JUMP in 2007,^[10] Golf & Mike disbanded in 2010 and became solo singers, Hiromitsu Kitayama debuted as a member ofKis-My-Ft2 in August 2011,^[11] Tomohisa Yamashita left NEWS in October 2011 to pursue a solo career,^[12] and Shota Totsuka debuted as a member ofA.B.C-Z in 2012.^[13]

"Fever to Future" is a single by GYM. It was released on August 30, 2006, throughJohnny's Entertainment.^[14] "Fever to Future" was written by A to Z, H.U.B., and Shin Tanimoto, and arranged by Naoya Kurosawa and Shunsuke Yabuki. It is an uptempo dance song.^[2]

• Japanese idol groups
• Japanese pop music groups
• Johnny & Associates
• Japanese boy bands
• J-pop music groups
• Musical groups from Tokyo

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