Which Japanese author and playwright known for nihilistic writings commited ritual suicide by seppuku in 1970? August 17, 2017 By Show answer Yukio Mishima He is recognized as one of the most important post-war stylists of the Japanese language. Mishima wrote 40 novels, 18 plays, 20 books of short stories, and at least 20 books of essays as well as one libretto More Literature QuestionsMore World Literature Questions