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In page Hōjō Masako:

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By 1185, the Taira were defeated at the climactic Battle of Dan-no-ura, which ended the war. Munemori was executed, while the remaining Taira were either executed or drowned as they fled, including the young Emperor Antoku.[citation needed] Yoritomo was now the undisputed leader of Japan and his wife Hōjō Masako and her family had stood by her husband through it all.