Haruka Shimazaki was a member of which Japanese idol girl group that is produced by Yasushi Akimoto?
High Tension (song) High Tension (ハイテンション ) is the 46th single by Japanese idol girl group AKB48. It was released on  16, 2016 (2016--) through You, Be Cool!/King Records. This is the final single appearance of Haruka Shimazaki, who left the group shortly after the release. The single's choreography is also centered by Shimazaki. The title song is used as the theme song of their drama "Cabasuka Gakuen" premiered on October 30, 2016.
Rainbow 7 Rainbow 7 (レインボー7 ) is the seventh album by the J-pop idol group Morning Musume. It is the first album to feature 7th generation member Koharu Kusumi and first album after graduation of Kaori Iida and Rika Ishikawa and departure of Mari Yaguchi. It was released on February 15, 2006.