Kazuya Aoyama (青山 一也 Aoyama Kazuya), real name Mototsugu Takeda (武田 基嗣 Takeda Mototsugu), is a Japanese businessman and former actor and singer. He began his singing career as a member of the rock band Green Grass, with whom he released at least one single. He made his acting debut in the 1971 series Century of the Emperor, but continued to pursue music, signing to Victor Records in 1971 and earning silver prize at the Shinjuku Music Festival for his second single, "Are You Happy?" He was eventually recognized by Toho, who selected hi…