Bene continues on the fourth stage of her pilgrimage, through Kagawa Prefecture, the area where Kobo Daishi was born. To learn more about Kobo Daishi, Bene meets up with a college lecturer who has been studying the ohenro pilgrimage for 20 years. He takes her to see the Mannoike Reservoir, an irrigation pond associated with Kobo Daishi. They also visit Zentsu-ji, a temple that stands on the spot where Kobo Daishi was born. Bene begins to understand Kobo Daishi not just as a saint but as a real person, someone who helped the people of Kagawa and whose influence remains alive in them to this day.

JJ takes a ride on an old-fashioned railroad. The Oigawa Railway in central Shizuoka turns the clock back to the classic era of steam trains. This region is also famous for its tea plantations. There's plenty to look at, both inside and outside the train.

Lana Bergmann visits the island of Iriomote-jima, one of the Yaeyama Islands in the southwestern end of the country. With subtropical virgin forests that cover about 90 percent of the island and several rare species of animals found there, Iriomote-jima is viewed as a highly important place from an academic viewpoint in addition to being popular for eco-tours. Lana first participates in a kayaking tour through Japan's largest mangrove forest and learns about plants and animals in the tidal flats living together in a clever manner. Then she treks to the top of the largest waterfall in Okinawa to savor a spectacular view. She also takes part in a yacht tour to observe the diversity of marine life in a coral reef that has nearly 400 different types of corals.