Kyo is a Japanese musician, singer, lyricist and poet. He is best known as the vocalist and lyricist of the heavy metal band Dir En Grey. He was formerly in a string of visual kei rock bands, with the most notable being La:Sadie's from 1996 to 1997. When they disbanded, he formed Dir En Grey in February 1997 with three of its members. Kyo formed the experimental rock band Sukekiyo in 2013, and the supergroup Petit Brabancon in 2021.

Dir En Grey is a Japanese heavy metal band formed in February 1997 and currently signed to Firewall Div., a sub-division of Free-Will. With a consistent lineup of guitarists Kaoru and Die, vocalist Kyo, drummer Shinya and bassist Toshiya, they have released eleven full-length albums. Numerous stylistic changes have made the genre of their music difficult to determine, though it is generally considered to be a form of metal. Originally a visual kei band, the members later opted for more subtle attire, but have continued to maintain a dramatic image on stage.