|MAMESHiBA NO TAiGUN|
MONSTER IDOL Unit
In August of 2019, an audition for a new WACK unit was held, with variety show comedian Kuro-chan being heavily involved with the process. The audition camp was filmed and later broadcast as the miniseries MONSTER IDOL, from November 6th to December 18th.
After the episode broadcast, their debut music video for lead single "Restart" was posted on Tower Records' YouTube page, followed by an announcement that the single would go on sale tomorrow. For promo, members of the group (and Kuro-chan) visited Tower Records stores around the country to meet prospective fans.
On December 25th, MAMESHiBA NO TAiGUN held their debut live, where not only was it announced that Kuro-chan would be dismissed as their producer, but also that MONSTER IDOL runner-up Kaede would join the group.
Rebranding, 2020 Edit
On January 1st, 2020, all MAMESHiBA NO TAiGUN members changed their stage names; Aika's name was extended to Aika The Spy, Nao to Nao Of Nao, Miyuki to Miyukiangel and Kaede to Kaedephoenix. Hanae reverted back to her former WAgg stage name, Hanaemonster. Along with these name changes also brought a change in image, with leather sukeban-inspired costumes suggesting an edgier and more "WACK-like" rebranding compared to the traditional idol appearance of their debut single. This upset a vocal portion of MAMESHiBA's fanbase, who complained to Watanabe about the changes and demanded Kuro-chan's rehiring.
Towards the end of January, MAMESHiBA NO TAiGUN opened their official YouTube channel, and announced that they would release their second single in the near future.
On February 12th, a special reunion episode of MONSTER IDOL aired where Watanabe and Kuro-chan announced the next singles and sales campaign: Kuro-chan Vs WACK. If the music video for the Kuro-chan written and produced song Rocketstart gains more views on YouTube by 11pm on February 19th than the WACK written and produced song Daijoubu Sunrise, then Kuro-chan will be reinstated as the fulltime producer. The music videos for the two songs dropped instantly after the show's broadcast.
- Nao Of Nao and Kaedephoenix were both former members of iDOL STREET's trainee unit, street-sei, and it's subgroup, SAPPORO Snow♥Loveits.
- Including Hanaemonster, who was a member of WAgg, there are a total of three idol trainees in MAMESHiBA NO TAiGUN.
- Hanaemonster and Nao Of Nao both previously participated in the WACK AUDiTiON CAMP 2019 together.
- Due to the audition being televised on a mainstream programme, MAMESHiBA NO TAiGUN have had the most commercially successful debut out of any other WACK group so far.