Perhaps better known by the stage name Toshi, he was the co-founder and lead vocalist for the Japanese heavy metal group X Japan before launching a solo career.
He formed a band called Dynamite (later called Noise) with a childhood friend named Yoshiki in 1977. He was a guitarist for the band, later becoming the singer following the departure of their first vocalist.
His solo career began in 1992 with a debut album called Made in Heaven.
He was born in Tateyama, Chiba, Japan.
Shinya drummed on tour for some of X Japan's live shows.