High-King (ハイ・キング, Hai-Kingu) was a Japanese girl group associated with Hello!
The group was created to promote Morning Musume's production of Rodgers and Hammerstein's Cinderella, titled Cinderella the Musical (シンデレラ the ミュージカル).
[1] The group's debut single, "C\C (Cinderella\Complex)" (Ｃ＼Ｃ （シンデレラ＼コンプレックス）), was released on June 11, 2008, under the Zetima label in two versions.
High-King ceased activities in September 2011 when Ai Takahashi graduated Morning Musume and Hello!
In 2015, Saki Shimizu and Maimi Yajima briefly performed during Berryz Kobo Matsuri on February 28 and March 1 as High-King, performing the song "Koiku no Meiro".