was a mid-station along the Nakasendà  in Edo period Japan. An ainoshuku refers to a rest station, rather than a post town with lodging. It was in between the post stations of Mochizuki-shuku and Ashida-shuku. It is located in the present-day town of Saku, Nagano Prefecture, Japan. The head of the village, Ichirozaemon, began brewing sake in 1689 and there are two sake breweries still operating in the area.