枚方市
Despite being born in Tokyo, Okamoto was actually raised in Hirakata, Osaka, where she also spent her elementary-school years. In 1961, she made her debut for performing arts activities in comedy. In 1970, she moved back to Tokyo, with subsequent transfer to the headquarters of the city, where she changed her name from "Noda Mutsumi" to her current name. In 1971, she starred in the comedy film "Tora-san's Love Call", as an extra.