He attended Hino high school in Tokyo, and married actress and singer Momoe Yamaguchi in 1980. He won the award for best supporting actor at the 10th Hochi Film Award and at the 7th Yokohama Film Festival for Typhoon Club. He is a keen pachinko player and was a smoker until he gave it up at the age of fifty. Because of his appearance in cigarette advertisements, it was debated in the Japanese diet whether Miura was an "idol" who could be considered to have a strong influence on underage smoking. He also played bongos in the rock group RC Succession before he was kicked out by their management.