Ever since Minegishi Minami announced her graduation I wanted to make a thread about the longest running idols in girl groups. Below you'll find the female idols that have been active for the longest in the same group.
The list is topped by the three members of Niigata based girl group Negicco. Negicco was formed in 2003 to promote green onions and were only supposed to be active for a month. Almost two decades later Nao, Megu and Kaede have now married but are still at work promoting their scallions.
Fourth to seventh place are reserved for members of AKB48. Minegishi Minami has been the last original member for years and will remain so until her graduation this weekend. Kashiwagi Yuki joined a year later as part of the group's second generation and has promised to stay in the group into her 30s. Fourth and fifth generation members Oya Shizuka and Miyazaki Miho joined a year later.
A total of six idols are still active since 2008. Takagi Reni, Tamai Shiori and Momota Kanako of Momoiro Clover Z were all there as the group was revealed in May and recently celebrated their 13th anniversary. Sasaki Ayaka became a member later during the group's chaotic pre-debut period. Furukawa Mirin is an original member of the high-energy Otaku girl group Dempagumi.inc and is breaking boundaries as she stays in the group after her pregnancy. Rounding up the group is Kishita Nozomi of STARMARIE.
Minegishi Minami (AKB48)
Kashiwagi Yuki (AKB48)
Oya Shizuka (AKB48)
Miyazaki Miho (AKB48)
Takagi Reni (Momoiro Clover Z)
Tamai Shiori (Momoiro Clover Z)
Momota Kanako (Momoiro Clover Z)
Kishita Nozomi (STARMARIE)
Sasaki Ayaka (Momoiro Clover Z)
Furukawa Mirin (Dempagumi.inc)
Saito Makiko (SKE48)
Mayama Rika (Shiritsu Ebisu Chuugaku)
Yasumoto Ayaka (Shiritsu Ebisu Chuugaku)
Yokoyama Yui (AKB48)
Takamori Shino (STARMARIE)
Suda Akari (SKE48)
- Dates based on when the member joined the group or when the group was formed/unveiled for original members
- Some dates might be a bit wrong and I might be missing some idol(s)