Photo: Consulate-General of Japan in Los Angeles / CC BY 4.0 compatible Government of Japan terms. Existing portrait crop, resized and converted to WebP.
Ken Watanabe's name appeared among the supporting actor nominees at the 2004 Academy Awards for The Last Samurai. For viewers encountering him as Katsumoto, his calm authority could feel like a discovery. He had already been a major television star in Japan for years. The international breakthrough arrived well into a working actor's life.
In a 2026 Tokyo Weekender interview, Watanabe looked back on the lead role in NHK's Dokuganryu Masamune, the year-long historical drama broadcast in 1987. Living with a character for that long had taught him about sharing a set with other performers and a crew. Before Hollywood, he had also worked with the British theatre director Terence Knapp, whose approach helped him find more freedom in acting.
Leukemia interrupted that career in 1989, when Watanabe was 29. He later returned to work and underwent treatment again after a recurrence. Speaking about that period years afterward, he described the uncertainty of being able to continue acting. It is a difficult part of his history to fit inside the tidy arc of an awards-season breakthrough.
The Last Samurai brought another practical challenge. Watanabe worked with an English-language coach and had to carry Katsumoto's authority through unfamiliar dialogue. In his Weekender interview, he described trying to preserve the subtlety he would use when performing in Japanese. Much of the character's presence comes from how carefully he listens before answering Tom Cruise's Nathan Algren.
The nomination is an easy date to remember. Looking further back gives that performance a longer history, through television, theatre, illness and returning to a set. By the time international audiences met Katsumoto, Watanabe had already spent years learning how to hold a scene.
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