The custom differs from area to area and it is also called misoka soba, tsugomori soba, kure soba, jumyō soba, fuku soba, and unki soba. The tradition started around the Edo period, and there are several traditions that long soba noodles symbolize a long life. The buckwheat plant can survivesevere weather during its growth period, and so soba represents strength and resilience.