She became the vocalist for the band BRATS , which allowed her to express a more raw, authentic musical style, moving away from the manufactured idol aesthetic, with the group remaining active until 2024.
The band features her sister, Aya Kuromiya, on bass, with the siblings focusing on a more aggressive and raw rock sound, abandoning the pop-influenced idol sound for a grungier aesthetic, noted by Resonance. japan junior idol rei kuromiya verified
In 2015, at the age of 14, she gained international viral fame as a member of , a chaotic "kawaii metal" group that combined J-pop melodies with heavy metal, featuring Australian wrestler Ladybeard. The music video for their breakout single, "Nippon Manju," garnered tens of millions of views on YouTube, introducing Kuromiya to a global audience completely separated from her junior idol roots. She became the vocalist for the band BRATS
: In 2015, she gained international viral fame as a founding member of The music video for their breakout single, "Nippon
Following her departure from LADYBABY, Rei continued to reinvent herself, ensuring her career remained "verified" by her own artistic standards.
In the most standard modern sense, "verified" relates to the official, blue-check accounts belonging to Kuromiya. Unlike many former child performers who vanished from public life due to the stigma of the junior idol industry, Kuromiya successfully transitioned into mainstream alternative rock. Her official platforms (such as X/Twitter and Instagram) are verified, serving as the official record of her adult career and creative output. 2. Lost Media and Archival Verification
The term "Junior Idol" (ジュニアアイドル) refers to a commercial niche in Japan that peaked significantly during the 2000s and early 2010s. This market primarily featured children and young teenagers—often between the ages of 8 and 15—participating in modeling, photobooks (gravure), and promotional DVDs. Regulatory and Social Shifts