Ep. 11: Airi Investigates Mysterious Sounds at Yoshimi Hundred Caves in Saitama

11

Following their departure from Nikko, Airi detects a unique auditory phenomenon that remains inaudible to others. The group follows the source of this enigmatic noise, leading them to a specific location in Saitama. Upon arrival, they discover that the sound originates from the Yoshimi Hundred Caves, which is identified as a historical site. This journey allows the characters to explore the area associated with the mysterious sounds Airi alone can perceive, connecting the auditory clue to the significance of the location.