Kaya(迦夜) is a Japanese visual kei musician, who is a vocalist of the electro/dark wave duo Schwarz Stein, and also Meties and Isola under the alias of Hime. Originally on Mana's record label, Midi:Nette, Kaya later signed to Next Music Inc., and the label's name was changed to Next Media Communications Inc. The label however went bankrupt in the summer of 2009 resulting in Kaya having to go back to an indie label. Kaya is also known for his androgynous female appearance and elegant dresses.
In 1997, Kaya debuted as the vocalist of the obscure visual kei band Meties, before later joining Isola. When Isola disbanded in 2001, Kaya then made his breakthrough as a visual artist as the vocalist for the darkwave duo Schwarz Stein, produced by Mana and signed to his label Midi:Nette. He also has been a solo artist since 2006, and in 2008, he made a major solo debut with the single "Chocolat". On July 13, 2016, he held a special 10th anniversary performance at Shinjuku ReNY, titled "The Birth of DIVA", with Kamijo as a special guest. Meties weas revived for one-night only as part of the celebrations.