was a Japanese novelist. She was considered "the female Shintaro Ishihara".
Born Kunie Nemoto (馿ÂÂæ ¹æÂ¬), Iwahashi was born in Hiroshima. Her mother and father were both teachers and Christians. The family evacuated from Hiroshima to Saga, Kyushu two months before the atomic bombing of Hiroshima in 1945.
Iwahashi's career began when she gained attention for her writing while attending Ochanomizu Women's College. Her short story "Gyakukoosen" was one of these early works. It was adapted into a movie by the Nikkatsu film studio. Iwahashi graduated in 1957 with a degree in pedagogical sociology. The same year, she was employed as a special feature writer for a magazine.
She married in 1957 and had one daughter. Iwahashi's husband died of cancer in 1983.