Yoshinobu TOKUGAWA, the 15th shogun, shogun, returned political power back to the Emperor (Taisei Hokan) as a last-ditch measure to save the political career of the Tokugawa clan.
15代将軍徳川慶喜は起死回生の策として大政奉還を実行し、徳川の政治的生き残りを図る。