The family went back to mom's hometown, Tosa. Somehow, the heat is different from Tokyo's so they are fully enjoying the countryside. Rumor is, there is a ghost that appears in "Hell's Valley" when Bunji and Fumi go exploring; Mom and her older brother unexpectedly went to their parents' home. Mom didn't know everything about her real dad and for the first time, her brother begins to speak of him; Mom and her brother took the Buddhist tablet and the picture of their dad to bring back to their homes which was a secret between them.
It's so scary.