Onyanko Club member #16. Another former member of the multi-member Onyanko Club, and one half of Ushiroyubi Sasareyubi (with Yukiko "Yuyu" Iwai), Mamiko went solo for a short time, scoring top ten hits with "Jonetsu Rainbow" (great song by the way - get it!) and "Tender Rain" before opting for a retired married life.