The region of Chugoku offers a lot of interesting stopovers between Kansai and Kyushu. It is also separated from Shikoku by Seto Inland Sea.
Since its kanji are the same as those to describe China, the region is also called "San’in-San’yo".
How to get to Chugoku
Location reachable with the JRP : order your Japan Rail Pass (from ~US$ 282)