Jokaku Gattai OSHIROBOTS
Genres: Action
Type: ONA, Episodes: 1
Aired: Dec 17, 2022
Source: Original
Synopsis:
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)