The project reimagines the historical castles in Japan as giant robots that transform and combine. In particular, the above short features the Kumamoto, Takamatsu, and Aizu-Wakamatsu Castles. A group of children and the Shirodama (the castles' souls, who are actually historical army commanders) join forces to pilot the castles.
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Trailer
【特別映像】『城郭合体オシロボッツ』ショートアニメ（監督・大張正己）／参城：熊本城・高松城・会津若松城 Special anime : Oshirobots/Director Masami Obari
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