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Furinkan gives us a note about the culture festivals of Japan: "Japanese schools from kindergarten all the way up to university have "culture festival" (文化祭/bunkasai) celebrations where students hold dance and theatrical performances, open small restaurants and hold other activities. These are open to the public and often former students of the school will visit. Typically these are held around November 3rd which is a national holiday in Japan (Culture Day)."

This day being pretty close to when the chapter was published, so this is another seasonal chapter.