While hot spring spas are gaining attention today, places offering traditional mixed-gender bathing have become rare. However, hope is not lost. We focused on a girl we encountered in the lounge area. She had come with friends, and the warmth of the hot spring had flushed her body, giving her a rosy glow and an incredibly erotic appearance. Let's call her Y. Her carefree demeanor seemed to invite attention, almost creating an illusion of invitation. Y has soft, large breasts—so big they could be called massive—fair skin, a great figure, and a firm, plump ass. Her beauty surpasses even that of celebrities. With a special drug mixed with aphrodisiac effects, she became highly sensitive, reacting intensely even to light touches. Her expression soon turned into a dazed, aroused stare. We received permission to ejaculate inside her vagina and enjoyed her in various positions.