The decision was difficult. She had spent eight years building a career based on her image as a junior idol—years that she could never get back. But leaving Ladybaby allowed her to focus entirely on BRATS, her rock band with her sister, where she could write her own music, control her own image, and distance herself from the gravure industry she had been part of since childhood.
: After years of independent work, Rei reunited with former LADYBABY member Rie Kaneko in 2023 to form the duo REIRIE . They made their major label debut under Bandai Namco Music Live's MoooD Records on January 28, 2026, with the EP Amethyst .
Rei Kuromiya, born on August 9, 2005, began her journey in the entertainment industry at a young age. She was discovered by a talent scout and soon started performing as a junior idol. Rei's early start in the industry allowed her to hone her skills, develop her stage presence, and build a strong fan base.
, specifically her transition from the highly scrutinized "junior idol" industry to her later music career The "Junior Idol" Context japan junior idol rei kuromiya patched
Rei’s transition out of the gravure idol scene was solidified through her involvement in music.
"She's flipped off fans and cameras during onstage performances," one observer noted, highlighting Rei's rejection of the polished, pleasant idol persona she had been forced to maintain for years. This was not a performer trying to please anyone. This was someone expressing genuine feelings.
: Transitioning to BRATS and REIRIE allowed her to swap synthesized pop for raw guitar riffs and self-authored lyricism. This shift allowed her to distance herself from the "haterade" of critics who sought to hold a child responsible for choices forced upon her by adults. Industry Legacy and Structural Lessons The decision was difficult
Rei Kuromiya began her career in the Japanese entertainment industry at age 8, originally debuting as a under the agency Charm Pro. Between 2009 and 2016, she released over 80 titles, primarily in the gravure (photo book) genre. This period of her life has been retrospectively viewed by fans and critics as one of significant exploitation, as she was marketed as an object of attention before she was old enough to consent to the "junior idol" culture. Breaking the Cycle: From Ladybaby to BRATS
Kuromiya has been vocal about the "emotional damage" caused by her early years in the sexploitative junior idol industry.
The evolution of Japanese alternative music highlights as an exceptional figure. Navigating the intense idol landscape requires deep resilience. Her career transition reflects a bold shift from the restrictive expectations of a young junior idol to the creative control of a self-determined rock musician. : After years of independent work, Rei reunited
In November 2017, she withdrew from Ladybaby, citing "throat issues" and a growing disillusionment with mainstream idol culture .
Rei Kuromiya ’s transition from a controversial child idol to a respected rock vocalist is one of the most compelling narratives in modern Japanese music history