Instead of a men's swimsuit challenge, hairless girls challenge with only a waist towel! Challenge! IN men's bath!! A challenge with a much higher difficulty than the men's swimsuit challenge!! Three innocent girls who no longer feel stimulation from ordinary sex. One day, at their travel destination, a crazy challenge idea is proposed: "Wouldn't it be interesting to go to the men's bath dressed as men?" The name is "Waist Towel One-Piece Men's Bath Challenge!" Then, wearing a short-haired wig and men's trunks, they head to the men's bath! Fortunately, all three are hairless flat-chested types, so they can somehow manage the upper body. However, since the lower body is obvious, they only have a waist towel! Going to the bath with pounding hearts... 360 degrees full of men! There was also a man who suspected them for a moment, but at least they didn't seem to be caught, so they were relieved. Now, seeking further stimulation, they approach other male guests, soak in the bath together, and increase the difficulty of the challenge, the three of them getting drunk on the thrill. The excitement reaches its peak, and when they say "Next is the open-air bath!" and rush over, two girls leave when they go to the toilet. Alone, bathing in the open-air bath with male guests. Dangerous! Caught! The rough men come rushing. And their bodies are groped, and they end up being inserted... And the two who went to the toilet are also caught there and become prey to the men! The price of the ultimate thrill was sex with an unknown uncle.
