Masuda was born in 1925, near the town of Shiojiri in Nagano Prefecture. During her later teen years, into her early twenties, she was an onsen geisha at a hot-spring resort in Japan. After this, she became a prostitute, vigorously protesting the passage of anti-prostitution laws. She eventually got a job making soap for a Korean worker, which she held for several months. When the soap business failed, she began drinking heavily, which led to her near death from liver failure and a suicide attempt. She survived and quit drinking, and when she had sufficiently recovered, she began to look after children, eventually becoming a full-time caretaker for several years. Eventually, she was able to open her own restaurant, and ran it for several decades. As a result of heavy drinking in her twenties, she died of liver cancer on June 26th, 2008.
Masuda wrote her autobiography between the years of 1956 and 1957. She had never learned to read more than hiragana, and wrote her entire book in it. Her editors worked carefully to convert her work into the standard kanji while preserving the feeling of her original writing.
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