If you’re a seasoned Japan visitor (or an adventurous first-timer), I would recommend trying the two least-known JR Passes: the San’in-Sanyo JR Pass, and the All-Shikoku Pass. The covers all the JR Shikoku routes and some extra private rail lines. This guide explains the JR Shikoku Rail Pass and introduces some highlights for Tokushima, Kochi, Ehime, and Kagawa Prefectures.
Highlights of Tottori, Shimane, Yamaguchi Prefectures with the San’in-Sanyo JR Pass.
Using the JR Seishun 18 ticket for a daytrip from Tokyo to Kofu, hometown of Nakao Takeuchi, creator of Sailor Moon, and Takeda Shingen, the Tiger of Kai who nearly stopped Oda Nobunaga’s unification of Japan.