Complex sentence: Stories of "bake-danuki" are told in each area of Japan, especially in Shikoku, and whenever mysterious events occur, it would be the work of a "tanuki".
Split into simpler sentences: Stories of "bake-danuki" are told in each area of Japan. There are especially many stories of "tanuki" in Shikoku, and whenever there are mysterious occurrences there, it would be the work of a "tanuki".