War years and post war survival
When the Americans invaded Guam in July 1944, Masashi was separated from his unit. He hid with two other soldiers and learned to survive in the jungle. For sixteen years, he hid even after finding leaflets declaring that the war had ended.
Masashi married on January 7, 1961, and had a daughter. A movie was made about his life. He later worked as a watchman for the Toei Motion Picture Company in Tokyo. He wrote a book about his experiences entitled The Emperor's Last Soldiers, published in 1967.
- Books: Straggler's Ordeal, Time Magazine, July 14, 1967
- E. J. Kahn, A Reporter at Large, II-The Stragglers:: Oh What a Miserable Life This Is!, The New Yorker, March 24, 1962, p. 47
- Japanese Army stragglers and memories of the war in Japan, 1950-1975 By Beatrice Trefalt