13화: 에리코와 시호가 산을 오르는 동안 두려운 메아리를 마주하다

13

Two young women, Eriko and Shiho, are climbing a mountain. Shiho is having a great time hearing her own voice echo in the mountains, but Eriko just wants to enjoy the view in peace. Then a man's voice breaks through the still air, and the echoes Eriko and Shiho hear suddenly bring a sense of fear... (Source: Crunchyroll)