Although Yamaguchi had a separate career as a singer, this was Miura's main form of employment through the 1970s.

Initially Miura struggled with his acting career, which had consisted of playing Yamaguchi's romantic partner.

[6] Miura is a keen pachinko player and was a smoker until he gave it up at the age of 50.

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.

Due to his wife's relatively greater fame and popularity, he is sometimes referred to as just "Momoe's husband" (Momoe-chan no Danna-san), a name which he dislikes.