[1][2] WACK was established by Junnosuke Watanabe on August 3, 2014, after the dissolution of the first generation of Bis and the formation of Pla2me.

[5] On June 1, Pla2me changed their name to POP and four new members, Miki Yamamachi, Yua Yumeno, Ao Shigusawa and Maaya Inukai, joined the group.

Alongside Pour Lui, the line-up consisted of Aya Eightprince, Go Zeela, Kika Front Frontale, and Peri Ubu.

[11] It was also announced that the finalists who had not been chosen to join Bis would debut in a sister group called Sis.

[13] The second generation of Bis released their debut studio album, Brand-new idol Society 2, on November 16.

Hirano Nozomu and Ooshouji Megumi, later known as Momoland and Pan Luna Leafy joined Bis, while Gamiya Saki and Momoko Gumi Inc., later known as Yuka Empire and Yu-ki Empire, joined the line-up for a collaborative group between WACK and Avex with the temporary name Project AW.

It was also announced that Aya Eightprince of Bis and Kamiya Saki of Gang Parade would temporarily swap groups for six months from May 1 in what was coined a "rental trade".

[16] On August 23, the line-up for Project AW was finalised and group's official name, Empire, was revealed.

Gamiya Saki, Cent Chihiro Tette, Orangeko Vampire, Ayuna C, and Choushouji Megumi, later known as Yuuki, Toriaez Hana, Nel Nehru, Muropanako, and Mewclub, joined Bis, Yokoyama Hina and Lisoliso, later known as Tsukino Usagi and Haruna Bad Chiiiin, joined Gang Parade, while Michihayashi Rio and Yaya Eightprince, later known as Mikina Empire and Maho Empire, joined Empire.

Bis 1st would consist of Go Zeela, Pan Luna Leafy, Momoland, Yuuki, Toriaez Hana, and Nel Nehru, Bis 2nd would consist of Kika Front Frontale, Aya Eightprince, Peri Ubu, Muropanako, and Mewclub.

[22] In April, following the split of Bis into two units, a rotating line-up system called Bis.League was launched.

[30] On April 10, WACK's third shuffle unit, Bully Idol, a parody of Billie Idle, released their version of "Soshite, Mata...".

[36] From November to December, WACK documented the audition process of forming a new group through the survival reality show, Monster Idol, which aired on TBS' Wednesday's Downtown.

The group's name, Mameshiba no Taigun, debut single "Restart", and final four member line-up was finalised on December 18.

[41] On October 31, Carry Loose disbanded after an attempt to achieve a major label debut through a 24-hour a day livestream lasting almost three months had failed.

[52] On October 2, Watanabe announced that all members of Go to the Beds and Paradises would immediately swap groups and release a second split EP on December 15.

WACK Select 7 which were released on December 27, revealed that the line-up of the new shuffle unit would be Yui Ga Dockson, Tsukino Usagi, Terashima Yuka, Hashiyasume Atsuko, Yamamachi Miki, Yumeno Yua and Cent Chihiro Chittiii.

[57] On January 2, 2022, Gang Parade, who previously split into Go to the Beds and Paradises, resumed activities with the addition of Kila May, Changbaby and Ca Non as new members.

[60] On March 26, WACK Audition Camp 2022 concluded with Gang Parade gaining two new members, Ainastar (a former Wagg trainee) and Tantan, later known as Potential, who joined the group on May 13.

At their final concert Watanabe announced that all of the members of Empire would re-debut as ExWhyZ under EMI Records later that year.

All existing members of the group, excluding Kaede who would be graduating on December 17, took part in the camp with their position in the line-up at risk.

[67] On December 17, audition camp contestants Momoka and Reona joined the group and Kaede graduated.

[68] On December 15, Tonai Bousho, a girl group formed through Monster Love on Wednesday's Downtown debuted with the single "Cookie".

[76] On August 23, former Bish member Cent Chihiro Chittiii released her debut album, Per→cent→age.

[83] On August 1, Junnosuke Watanabe, the founder and director of WACK resigned his position at the company, citing an interest in studying in the UK.