Mameshiba no Taigun (豆柴の大群), stylized as MAMESHiBA NO TAiGUN, was a Japanese alternative idol girl group formed through the reality survival show Monster Idol which featured on TBS Television's variety show Wednesday's Downtown in 2019.
Mameshiba no Taigun was formed on December 18, 2019, through the final of TBS's reality survival show Monster Idol.
[4] The group were scheduled to release their debut studio album, Start, on May 13, 2020,[5] however it was delayed to June 10 due to the COVID-19 pandemic.
[7] On August 5, it was announced that the group would make their major debut with the triple A side single, "AAA", under Avex Trax on October 7.
[13] On September 7, in the lead up to the release of their next single, "Must Change", the group launched the "Must Change Project" in which each member would have a solo edition of the CD single and whoever sold the most copies would receive a solo debut while whoever sold the least number of copies would have to re-audition for the group.
[15] From December 11 to 14, Mameshiba no Taigun Nari no Gasshuku (豆柴の大群なりの合宿), an audition camp with the aim of finding new members for the group was held.
[16] It was announced that the audition camp was being held due to the unprofessionalism of the group's members who had cancelled an upcoming job with little notice thus causing staff problems.
[17] The audition camp resulted in Nao and Aika being kicked out of the group but they were ultimately allowed to keep their positions.