It accommodated the Shinsengumi (literally, the newly selected corps, referring to a special police force for the Tokugawa regime), Ou-reppan allied force, Sadaaki MATSUDAIRA and escaped into Ezochi (inhabited area of Ainu); Ezo (Hokkaido).
新選組や奥羽列藩同盟軍、松平定敬らを収容し蝦夷地（北海道）に逃走した。