[1][2] In their early development, they are often supported by temporary, concurrent members of AKB48, such as Jurina Matsui and Miyuki Watanabe.

[10] In response, it was announced to significantly change AKB48 management structures, with individual companies independently running each of the Japanese groups.

[14] Following the statement, SNH48 declared that it had been completely independent from AKB48 from the beginning and SNH48 management had never made any form of partnership with AKS.

[17] At that time, AKS cooperated with Yoshimoto Kogyo Taipei Branch and expected to start audition in 2012.

[18] On July 30, 2018, AKS canceled a joint venture and license agreement with TPE48's management and created AKB48 Team TP.

[20] On December 27, 2017, Yui Yokoyama, the general manager of AKB48, announced the formation of MUM48, based in Mumbai, India, through a Showroom live broadcast.

[25][26] On June 21, 2018, AKS announced the formation of SGO48, based in Ho Chi Minh City (Saigon), Vietnam.

[35][36] On October 29, 2018, the group's first extended play COLOR*IZ was released, and sold over 34,000 units (as reported by Hanteo Chart), setting a new record for the highest number of albums sold on the first day of a Korean-based girl group's debut release.

[37][38][39] The music video for the lead single "La Vie en Rose" achieved more than 4.5 million views within 24 hours of its release on YouTube, making it the most-watched debut music video by a Korean act in 24 hours.

[53][54] On January 6, 2020, the members' agencies and CJ ENM reached an agreement to resume the group's activities.