Onyanko Club
is a Japanese idol Jpop band created in 1986 as a four-member sub-group Onyanko Club. Their first single, "Watashi wa Rika-chan", featured Rika Tatsumi with the lead vocals. Their second and last single, "Jibun no Yūnomo Nan Desukeredo" was last performed at the Onyanko Panic! Sotsugyou Kinen Concert where Mika Nagoya graduated from Onyanko Club.