Masumi Oshima

 is a Japanese writer. She has won the "Bungakukai" Prize and the Naoki Prize, and her works have been adapted for television and film.
Biography.
Masumi Oshima was born in 1962. She was raised in Nagoya and grew up reading science fiction. At the age of 20 she started writing a script for a play, but eventually turned to writing novels. In 1992, she submitted her story "Haru no Tejinaji" (lit. "Spring Magician") to "Bungakukai" magazine's new writer contest, and won the 74th "Bungakukai" Prize.
Oshima's 2003 novel "Chocolietta", about a young woman who uses the Federico Fellini film "La Strada" to recover from her grief, was adapted into a film by screenwriter and director Shiori Kazawa. The film premiered at the 2014 Tokyo International Film Festival and was released nationally in 2015. Oshima's 2009 novel "Nijiiro Tenki Ame" (lit. "Rainbow Weather") and its 2010 sequel "Bitter Sugar", about three women whose friendship is tested as they approach the age of 40, were adapted into a 2011 NHK drama called "Bitter Sugar", starring Ryō, Emi Wakui, and Sawa Suzuki.
Oshima was first nominated for the Naoki Prize in 2015 for her novel "Anata no Hontō no Jinsei wa" (lit. "Your Real Life"), a story about a young writer who discovers that a famous author's works are actually written by someone else. In 2019, Oshima won the 161st Naoki Prize for her novel "Uzu: Imoseyama Onna Teikin, Tamamusubi" (lit. "Whirlpool: Husband and Wife Mountains, A Mirror of Virtuous Women, Requiem"), a work of historical fiction about 18th century playwright and puppeteer Hanji Chikamatsu.