Miki served as the wife of the Prime Minister of Japan, or First Lady, during her husband's two-year tenure from 1974 to 1976.

[1][2] Her father, Nobuteru Mori, held a seat in the Japanese House of Representatives and founded Showa Denko, a major chemical engineering firm.

[1] Her brother, Kiyoshi Mori, was the head of the now defunct Management and Coordination Agency, which would later become the interior ministry.

Sawachi has noted that Miki once said, "It is an extremely normal thing to express opinions for peace.

While Miki had called for the establishment of the fund, she publicly severed ties with the charity in 1996 when the Japanese government balked at providing official reparations to the comfort women.

[2] Mutsuko Miki died at a hospital in Tokyo of colon cancer on 31 July 2012, on her 95th birthday.