Joukaku Gattai Oshirobots

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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.

(Source: ANN)