K.A.Z originally wanted to be a drummer, but drums were too expensive. He found a guitar in his sister's room and began to play with it when she was out. K.A.Z was first guitarist of the bands Gemmy Rockets and The Lovers, before forming
Oblivion Dust in 1996. In January 1998, he joined
hide's backing band, Spread Beaver. However this did not last long due to hide's death on May 2, with K.A.Z only appearing on two songs on his final album
Ja, Zoo, released at the end of the year. Although, Spread Beaver did go through with the 1998 tour, with K.A.Z joining them. He and his Spread Beaver bandmates I.N.A. and D.I.E. remixed a song for
Zilch's
Bastard Eyes in 1999. K.A.Z also appears on hide with Spread Beaver's 2000 version of "
Tell Me" and has played with them each time they reunited; 2008, 2016, 2018, and 2023. K.A.Z is portrayed by Masato Kataoka in the 2022 film , which shows how
Ja, Zoo was completed following hide's death. In 2001, the year Oblivion Dust disbanded, he co-arranged the song "Tightrope" on the debut double A-side single of
L'Arc-en-Ciel bassist
Tetsu. In 2002, K.A.Z formed the short-lived rock unit
Spin Aqua with singer, actress, and former model
Anna Tsuchiya. After producing three singles and one album, they dispersed in mid-2004. He started to work with L'Arc-en-Ciel vocalist
Hyde in 2003, co-arranging all the songs on
666. He co-arranged and co-produced Hyde's third solo album
Faith, and composed five of the songs, including the single "
Season's Call". He also served as support guitarist on Hyde's tours. In late 2004, K.A.Z created the band Sonic Storage with his former Spread Beaver bandmate I.N.A. He also participated in, influential Korean musician,
Seo Taiji's album
7th Issue. On June 28, 2007, it was announced that Oblivion Dust would reunite, and in early 2008 K.A.Z and Hyde formed
Vamps. K.A.Z is also a composer for films, including
Detroit Metal City (2008) for which he wrote the main track "Satsugai". ==Equipment==