Kokona Aoba  

, 青羽 ここな

At Mt. Takao's slopes, Aoi, Hinata, and Kokona encounter each other in search of dwarf flying squirrels. However, Kokona faces an obstacle when one of her shoe soles tears partially. Despite this setback, Aoi provides prompt repairs, allowing the group to continue their descent. Over time, the four of them bond through their shared passion for these fascinating creatures and form a strong friendship circle.