Yasunari Kawabata had Parkinson's disease), a possible illicit love affair, or the shock caused by the suicide of his friend Yukio Mishima in 1970. Unlike Mishima, Kawabata left no note, and since (again unlike Mishima) he had not discussed significantly in his writings the topic of taking his own life, his motives remain unclear. However, his Japanese biographer, Takeo Okuno, has related how he had nightmares about Mishima for two or three hundred nights in a row, and was incessantly haunted by the specter of Mishima. In a persistently depressed state of mind, he would tell friends during his last years that
Yukio Mishima in the snow for one of Tamotsu Yato's photoshoots. In 1955, Mishima took up weight training and his workout regimen of three sessions per week was not disrupted for the final 15 years of his life. In his 1968 essay "Sun and Steel", Mishima deplored the emphasis given by intellectuals to the mind over the body. Mishima later also became very skilled at kendo, traditional Japanese swordsmanship. After briefly considering a marital alliance with Michiko Shōda (who later married Crown Prince Akihito and is now Empress Michiko), Mishima married Yoko Sugiyama on June 11, 1958. The couple had two children: