Artist: うしろゆびさされ組 (Ushiroyubi Sasaregumi)
Ushiroyubi Sasaregumi is a idol sub-unit duo from the multi-member Idol group [a3398228].The group featured two Onyanko Club members, #16 [a1512366] and #19 [a4054037]. The group split when Mamiko graduated and began to pursue a solo career.
