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.
Onyanko Club sang back-up vocals on some of the songs released by Ushiroyubi Sasaregumi.
[2][8] They printed 30,000 record jackets for their debut song under this name, but the name was hastily changed to Ushiroyubi Sasaregumi due to a change of heart on the part of Kazuji Kasai, chief director of Yūyake Nyan Nyan, supervisor of Onyanko Club.
[2][8] According to Kasai, the reason Takai and Iwai were selected was because they resembled the heroines in the anime "High School Kimengumi".
[3][4] The contrast between Takai, who is reputed to be one of the most popular and beautiful girls in Onyanko Club, and Iwai, who is said to be a cute character like those in Anime, was also a topic of conversation.