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Momotarō-zamurai (桃太郎侍) or Samurai Momotarō is a Japanese novel by Kiichirō Yamate (1899–1978). Published in 1946, the novel centers on an Edo-period rōnin, Shinjirō, the younger twin brother of a daimyō who was caught in a succession dispute. Shinjirō comes to the aid of his brother in this good versus evil plot in which the title character assumes the name of Momotarō.