Formed a rock band with her sister, Aya Kuromiya , at age 10.
Rei Kuromiya began modeling and appearing in "junior idol" media in 2008 at a very young age. Her early work consisted primarily of: Gravure and Photobooks junior idol rei kuromiya work
: She debuted in 2008, initially using the stage name "Ray". By 2009, she joined Bambina Pro , where she quickly became the agency’s most popular talent. Formed a rock band with her sister, Aya Kuromiya , at age 10