おニャン子クラブ
Onyanko Club, in particular, shifted public perception of idols from professional stars to ordinary schoolgirls who would gain experience throughout their career. They were also the first group to introduce a "graduation system", where older members would eventually leave the group while newer inexperienced members would join, with the system being named such as the group drew similarities to a school club. Onyanko Club also led to idols becoming closely associated with television, as the visual component became important to the overall enjoyment of their music.