Jiro Nitta is the pen name of popular Japanese historical novelist Hiroto Fujiwara. He was born in an area that is now part of the city of Suwa, Nagano Prefecture, Japan.
His uncle was the famed meteorologist Sakuhei Fujiwara and his son is mathematician Masahiko Fujiwara. After retiring from the Japan Meteorological Agency, he began writing professionally. Originally a meteorologist, he wrote mainly on themes connected with mountains.
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