Elf to Bike to Teikoku Chiri Chousain to

Nonoa, an elf who works as an assistant to a researcher at the Imperial Geographical Survey Institute, rides a motorcycle with her partner Kago to investigate the roads along the local roads where demons and monsters roam, which have changed dramatically. She was working to update the maps. Nonoa takes a bath in a spring to rest, but what appears before her...?