Yumi, a serious-looking female college student who was visiting a hot spring resort for a tennis training camp, bathes in the men's bath while apologizing with a very humble attitude! She is surrounded by three male customers who are there and when they carefully lick her not only on her buttocks, even though she did not ask for it, she feels embarrassed but also aroused. Furthermore, when it comes to the mission of licking a dick, she blushes but carefully licks off the Shizuku with the tip of her tongue!