Both the Japanese and Filipino people experienced a re-writing of their national histories upon being defeated by the United States: the Philippines after 1902 and Japan after 1945. This re-writing was conducted in order to justify and explain US rule and its ideology of modernisation and democracy. These new histories portrayed the immediate past as the dark ages: the Spanish colonial period for the Philippines and Japan's wartime totalitarianism and militarism.

What kind of dilemmas and contradictions did Filipino and Japanese historians and intellectuals embrace by accepting the US re-writing of their national histories? Did Japanese Filipino and Japanese historians interact at all, under the US hegemony? The idea of America's Shadow is meant to shed a light on areas of darkness in both Japanese and Philippine historiographies and understanding of their region.

Through an examination of the commonalities, differences and interactions of Japanese and Filipino histories, ideas of history, modernisation theory, and area studies, Serizawa makes an important contribution to sorting through the tangled histories of Asia in the complicated matrix of colonial, wartime and Cold War contexts.