The abrupt ending of the film is due to the fact that it was originally intended to be the first part in a trilogy of films based on a lengthy Japanese novel. Nakazato Kaizan's 41 volume historical novel focused on the Edo period in Japanese history when the shogunate collapsed and a new government arose that revolved around the Emperor. It was the longest novel in Japan - encompassing 1533 chapters and over 5 and a half million Japanese characters - until the publication of Sohachi Yamaoka's serialized novel "Tokugawa Ieyasu", which is reportedly the longest novel in any language.
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