Masayuki Mori (森 雅之 Mori Masayuki?, January 13, 1911 – October 7, 1973) Born in Sapporo, Hokkaido prefecture) was a Japanese actor, the son of Takeo Arishima, a Japanese novelist active during the late Meiji and Taishō periods. Mori appeared in many of Akira Kurosawa’s films such as Rashomon and The Idiot. He also starred in pictures by Kenji Mizoguchi (Ugetsu), Mikio Naruse (Floating Clouds) and other prominent directors. —Wikipedia
Mifune and Kyô may have had the more eye-catching roles in Rashômon but Mori's performance as Kyô's husband is their equal. He had already appeared for Kurosawa twice before and would go on to work with him again, most notably in an adaptation of Dostoyevsky's The Idiot which was butchered by Shochiku. Apart from Ozu, Mori worked with most of the acclaimed Japanese directors of the period including Mizoguchi, Naruse and Ichikawa in such great films as The Lady Of Musashino, Ugetsu, The Heart and Floating Clouds. My favourite Japanese actor and one of the great movie stars..