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In page Chikako, Princess Kazu:

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There is a legend that Princess Kazu gave one of her ladies-in-waiting to Iemochi as a concubine, named Sachi. Sachi followed the shōgun to Kyoto and Osaka, but one year after Iemochi's death, Sachi was murdered by a samurai from Satsuma who believed her to be Princess Kazu.[citation needed]