The Outdoor Activities club experiments: can they make a summer sleeping bag warm enough to use in the winter with wrapping and layering?
Yes, but it's not really feasible. They get winter bags.
Rin has gotten her driver's license, and takes her scooter to a distant campground.
Both parties makes some good food and bundle in for the night.
Nadeshiko and Rin send each other photos of the view by night.