Ushiroyubi Sasaregumi.

About Ushiroyubi Sasaregumi

Ushiroyubi Sasaregumi (うしろゆびさされ組) was a female Japanese pop music duo consisting of Yukiko Iwai and Mamiko Takai, formed in 1985. In parallel to their membership in this duo, Iwai and Takai were at the same time members of Onyanko Club, a large pop group widely seen as a precursor to groups such as Morning Musume and AKB48. Onyanko Club sang back-up vocals on some of the songs released by Ushiroyubi Sasaregumi. They are most notable for singing several of the theme songs for the anime television series High School! Kimengumi. Ushiroyubi Sasaregumi debuted on Yūyake Nyan Nyan("Sunset Meow Meow") on 30 September 1985. Throughout their short-lived career, the group released six singles, three albums, a promotion video, and two photo books. The group disbanded after Takai's graduation from Onyanko Club on 5 April 1987.