Matsuno is a little township on a tributary of the Shimanto River. Surrounded by mountains, with a wide and shallow river running through it, Matsuno is a typical inland Shikoku town. What sets it apart is its aquarium, the Osakanakan, with fish and amphibians from the Shimanto River, as well as massive fish from the Amazon River.

There are also a couple of rather fine statues of oni, or ogres, reflecting the name of the region which includes the Japanese character for these mythical beings.