In 1871, five young girls were sent by the Japanese government to the United States. Their mission: learn Western ways and return to help nurture a new generation of enlightened men to lead Japan. Raised in traditional samurai households during the turmoil of civil war, three of these unusual ambassadors--Sutematsu Yamakawa, Shige Nagai, and Ume Tsuda--grew up as typical American schoolgirls. Upon their arrival in San Francisco they became...