Born in Kochi and raised in Tokyo, Okanoue began to make photo collages while studying fashion and drawing at the
Bunka Gakuin in Tokyo in the early 1950s. The young Okanoue initially knew little of art history or the
Surrealist movement. In 1952, a classmate from Keisen Girls' High School introduced Okanoue to poet and art critic
Shuzo Takiguichi, a leading figure in the Japanese
Surrealist movement, who would help introduce her to the wider art world, including the work of European Surrealists, such as German artist
Max Ernst, who was an influence on her subsequent work. She exhibited in two exhibits including, solo shows in 1953 and 1956 at the Takemiya Gallery in Tokyo, == Artistic style ==