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 1995 to 1997. He then started Dir En Grey in February 1997, following La:Sadie's disbandment with three of its members, formed the experimental rock band Sukekiyo in 2013, and the supergroup Petit Brabancon in 2021. Kyo was inspired to become a musician when he saw a picture of Buck-Tick vocalist Atsushi Sakurai on the desk of a junior high school classmate. When he then discovered X Japan he was particularly fond of hide and had his parents buy him the guitarist's black signature model guitar. However, after realizing how difficult it was to play guitar and then bass, he then switched to vocals.
With a tenor voice spanning just below five octaves, Kyo's vocals are considered a pivotal aspect of Dir En Grey's music. He has gained wide recognition for his large range and versatility, being able to "howl, croon, emote cleanly, scream, shriek, growl, bellow, and make nearly inhuman sounds." Loudwire wrote "Sporting incredibly low death metal gutturals, Kyo can also turn a complete 180 as one of metal's highest shriekers." Dane Prokofiev of PopMatters said that his "natural ease at and inclination towards striking such a stark contrast between the two opposite ends of the human vocal spectrum can be obtained as only a kind of pre-birth winning lottery ticket—you know, that much coveted prize we call 'talent'."
AllMusic's Thom Jurek has compared him favorably to experimental and avant-garde vocalists Mike Patton and Diamanda Galás. Kyo's own bandmate Die said "he's like a guitar or an effect. Kyo is an instrument. That inspires me. That allows me to grow as a guitarist as well."
While he has only composed a handful of Dir En Grey's songs (for example, "The Domestic Fucker Family" and "Hades"), Kyo is responsible for all the lyrics, which usually have negative implications and touch on a variety of dark, sometimes taboo, subjects, such as sexual obsessions ("Zomboid"), child abuse ("Berry"), and mass media ("Mr.