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.
[4] 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.
[5] 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.