Ishii

Ishii (イシイ) is a scientist who lives in an abandoned airbase. When Chito and Yuuri encounter her, she was recording results from a model airplane's test flight, falling down in the process. She enlists their help to finish building a full-scale airplane based on old recovered blueprints in an attempt to fly to another city, in exchange for repairing the girls' Kettenkrad. She gives Yuuri and Chito potatoes to eat and a bath to clean themselves in, and directs them on where to find a nearby rations factory.