第 6 集: Ruri 與朋友們在神社附近修正筆記錯誤後，找到了藍寶石礦脈。

6

Ruri has identified the watershed with the sapphire deposit. She, Nagi, and Yoko travel to the area and visit a shrine. Searching on foot nearby seems hopeless, partly because fallen leaves cover the ground. Ruri finds a mistake in her notes. More sand searches correct the error and further pinpoint the deposit. Climbing to a ridgeline, they find plentiful sapphires. Nagi explains how they might have come to be there. An old inscription hints at a missed clue in the shrine's name. Shown but not mentioned: Ruri's shoes and clothes are now more suitable for outdoor work. (Source: Wikipedia)