Sauna, Food, and a Three-Wheeler (Sauna to Gohan to Sanrin Bike, サウナとごはんと三輪バイク) is a bonus episode of Heya CampΔ. It was produced in cooperation with Yamaha Motors as a promotion for their three-wheeled motorcycle. It was included in the Blu Ray/DVD release of Heya Camp, after a one-day-only showing on YouTube on April 29, 2020.
Rin's scooter is in the shop, so her father Wataru obtains a Yamaha three-wheeler for her to use. She heads out on it to Nagano prefecture. She stops at a hot spring where she makes use of the sauna as well as the bath. Afterwards she has dinner at a restaurant. She gets supplies from a local supermarket, then cooks dinner at her campsite near Mount Nyukasa.
- Rin visits Enmei no Yu hot spring in Kobuchisawa
- Rin has lunch at Takaoka restaurant
- Rin buys supplies from Sunflower market in Hokuto
- Rin goes camping at Mount Nyukasa in Nagano prefecture