The group initially briefly appeared at the end of the music video for "Soshite, Mata..." however, just a few days later, an alternative music video was released with BULLY IDOL performing and BILLIE IDLE®︎ having a short cameo at the end. This version of the song was titled "Soshite, Mata... (Remix)" (そして、また、、(リミックス))
Due to the rivalry between BILLIE IDLE®︎'s Pour Lui and WACK director Watanabe Junnosuke, it appears that BULLY IDOL are intended to be a rival group to BILLIE IDLE®︎. This is backed up by hints from Watanabe that the group were formed as payback for Pour Lui parodying BiSH's Promise the Star a few months prior.
On April 9th, advertisements for an untitled Bully Idol release scheduled for the following day started to appear in record stores. The following day, BULLY IDOL's version of Soshite, Mata... was released.
They held their debut live on May 31st. After this live, Soshite, Mata..'s promotions ended and the group became inactive.
- [2019.04.10] Soshite, Mata... (Remix)
- As BILLIE IDLE®︎ will be dissolved in the "LAST ORGY" concert on December 28th, 2019, BULLY IDOL may also be dissolved.