Introduction : Pan-Asian ideology and the Fifteen Years' War -- Conceptual roadmap : tea, China, and leadership -- Prelude to the Fifteen Years' War -- From internationalism to Pan-Asianism -- Manchukuo and the dream of Pan-Asia -- The China War and its Pan-Asian rescue -- The war of "world historical significance" -- Pan-Asianism in the co-prosperity sphere -- Conclusion : From tea to co-prosperity.