Effective period / Period of releases: 2017 - 2020

Members: Rei Kuromiya, Aya Kuromiya, Hinako (2), Piroshiki, Maria (218), Seira Goto

Stylized as BR△TS.

Formed by Rei Kuromiya (vocals) with the help of her talent agency in 2011. Her sister, Aya Kuromiya (bass), completed the lineup along Seira Goto (guitar) and Maria (drums). They all spent a year learning their instruments before their first live event, in July 2012.

Activities resumed in 2015 with the Kuromiya sisters and their friend Hinako (guitar), who joined in 2014 (initially as Hiyori) before leaving the band in 2020 for personal reasons. Piroshiki handles all drumming duties since 2017. The current Brats lineup broke up with the idol business, leaving J-Pop behind for a heavier, authentic sound.