Open Air Bath
Recruit Tetsu in Lakewest. While you are in the Kobold section of Two River City, stop to buy a few Fried Tacos. When you eat these, there is a probability of becoming toasty. Return to Lakewest and make sure there is steam releasing from the Hero's body. Talk to Tetsu and he will provide you his service, and you will have acquired an Open Air Bath. You must first have the Jungle Bath model. Exit and renter the Jungle bath at least twenty times until you have obtained the Open Air Bath.