In East Asia, the Second World War remains a controversial issue. Historian Rana Mitter visits Tokyo to explore how Japan remembers the conflict - through its movies. Rana talks to leading directors including Harada Masato, Katabuchi Sunao, Arai Haruhiko and Tsukamoto Shinya, to film critics, and to a new generation of young Japanese viewers. And along the way he explores how the war looks from the perspective of modern Chinese cinema.