Ken Watanabe will lend his voice as narrator to Martin Scorsese and David Tedeschi’s documentary “The 50 Year Argument” for the Japanese audience.

The announcement was made by Japanese pay-TV broadcaster WOWOW, which is co-producing alongside HBO Documentary Films, BBC Arena and Scorsese’s Sikelia Productions. Cinephil handles international sales.

“I have a lot of respect for the ‘matter-of-fact approach’ this film takes and believe this kind of intelligent film should be seen in Japan. It’s important to convey the truth even if it’s painful, which is needed in Japan these days,” said Watanabe.

In Japan, the film will screen in the special screenings section of next week’s Tokyo International Film Festival and also exclusively on WOWOW.