A Tiny Young Lady Found At An Onsen Ryokan! Why Don't You Enter The Men's Bath With Just A Towel And Take The Tsuru-Peta Challenge?

A small-breasted young lady found at a hot spring inn enters the men's bath with just a towel, aiming for a high cash prize in the 'tsuru-peta challenge'!! Boldly pretending to be a man without hiding her chest! Charges into the men's bath with her flat chest fully exposed!! If she clears various missions without being discovered, she gets the prize! Naturally, the more difficult the erotic missions, the higher the amount skyrockets!! Will she be found out when she talks to male customers!? A secret handjob without being noticed by other male customers! A secret blowjob!? She challenges the highest difficulty, tsuru-peta sex, but... got caught!? The excited male customers and the small-breasted young lady get super excited too!? Furthermore, risking her body, they all have a friendly orgy, and will she succeed in 'collecting a large amount of sperm' and get the high cash prize!?