Mori was born in Yokohama, in the Kanagawa Prefecture.
[1] She attended Hokkaido Hakodate Nishi High School and graduated from Nara Women's University.
[3] In 1979, her first published work, the short story "Ballad in Blue" (バラード・イン・ブルー, Barādo in burū ) won the 33 Shōsetsu Gendai Shinjinshō Award (小説現代新人賞).
[4] Her early works contained elements of mystery and suspense while her later works increased her scope of interest to the genre of horror and historical novel.
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