Her real name is Murakami Mitsu. She was a Japanese national actress. Mori became a popular singer after her cinema debut, she had only 14 years. Later she must stopped her career of singer , because of tuberculosis. Mori returned to the stage in 1950. She appeared mainly in radio and television dramas. Her the biggest hit was longest-running plays HO-RO-KI, in which she set a record by appearing 2017 times. The cause of death was a pneumonia and heart failure.