In the 1993 OVA series Konpeki no Kantai (lit. Deep Blue Fleet), right after his plane is shot down, Yamamoto suddenly wakes up as his younger self, Isoroku Takano, after the Battle of Tsushima in 1905. His memory from the original timeline intact, Yamamoto uses his knowledge of the future to help Japan become a stronger military power, eventually launching a coup d'état against Hideki Tōjō's government. In the subsequent Pacific War, Japan's technologically advanced navy decisively defeats the United States, and grants all of the former European and American colonies in Asia full independence. Yamamoto convinces Japan to join forces with the United States and Britain to defeat Nazi Germany. The series was criticized outside Japan as a whitewash of Imperial Japan's intentions towards its neighbors, and distancing itself from the wartime alliance with Nazi Germany.
In the 1993 OVA series Konpeki no Kantai (lit. Deep Blue Fleet), right after his plane is shot down, Yamamoto suddenly wakes up as his younger self, Isoroku Takano, after the Battle of Tsushima in 1905. His memory from the original timeline intact, Yamamoto uses his knowledge of the future to help Japan become a stronger military power, eventually launching a coup d'état against Hideki Tōjō's government In the subsequent Pacific War Japan's technologically advanced navy decisively defea.ts the United States, and grants all of the former European and American colonies in Asia full independence. Yamamoto convinces Japan to join forces with the United States and Britain to defeat Nazi Germany. The series was criticized outside Japan as a whitewash of Imperial Japan's intentions towards its neighbors, and distancing it,self from the wartime alliance with Nazi Germany.