Debut members:
Jaekyung, Rana, Bini, Leesem, Eunji, Sera, Euaerin, Minha, Hyemi (9 members)
Jaekyung leaves & Hyuna joins:
Rana, Bini, Leesem, Eunji, Sera, Euaerin, Minha, Hyemi, Hyuna (9 members)
Rana and Bini leave:
Leesem, Eunji, Sera, Euaerin, Minha, Hyemi, Hyuna (7 members)
Kyungri joins:
Leesem, Eunji, Sera, Euaerin, Minha, Hyemi, Hyuna, Kyungri (8 members)
Continued:
Leesem, Eunji, Sera, Euaerin, Minha, Hyemi, Hyuna, Kyungri (8 members)
Sungha joins:
Leesem, Eunji, Sera, Euaerin, Minha, Hyemi, Hyuna, Kyungri, Sungah (9 members)
Continued:
Leesem, Eunji, Sera, Euaerin, Minha, Hyemi, Hyuna, Kyungri, Sungah (9 members)
Leesem, Eunji, and Sera leave & Sojin and Keumjo join:
Euaerin, Minha, Hyemi, Hyuna, Kyungri, Sungah, Sojin, Keumjo (8 members)
Continued:
Euaerin, Minha, Hyemi, Hyuna, Kyungri, Sungah, Sojin, Keumjo (8 members)
Euaerin and Minha leave:
Hyemi, Hyuna, Kyungri, Sungah, Sojin, Keumjo (6 members)
=
Instiz: Withdrawals and additions of a 9-member girl group with only one debut member remaining
- At this rate, the problem is the company
- Ugh... I miss Sera ㅠㅠ Minha-ya...
- Hyemi must be feeling strange
- I've never seen a successful girl group after so many member changes. Same with After School... I think they should've just continued with less members without adding more members
- It's hard to not get popular with Nine Muses members. It's weird.