An aphrodisiac sauna filled with steam. A healthy big-breasted girl with abnormal sensitivity and a sweaty body that goes crazy instead of calming down.

We ended up staying at a hotel with a mixed sauna on a university club trip. What was revealed in a closed room was Yuuri, who has been rumored to have an outstanding figure, in a sweaty swimsuit. …As planned. He was in a good mood and was so easygoing that I thought Yuuri would definitely accept the invitation. Above all, her sweaty, healthy boobs and ass...it was only natural that she would target this body. "Hey, why don't you do it?" Aiming at the busty body locked in a stuffy, closed room, an aphrodisiac is added to the steam. A night begins in which Yuuri's metabolism, rationality, and sensitivity are completely messed up due to the heat wave and the ingredients of the medicine, and she is made to cum until she goes crazy.