While relaxing in the hot spring at a hot spring inn I came to on vacation, I heard a woman's voice and wondered why, but I realized I had mistakenly entered the women's bath! Since it was the women's bath, my breasts and private parts were naturally exposed! Even though I thought it was dangerous, my eyes were glued to her naked body and I got an instant erection! What's more, when the women found out and I thought my life was over, the women were aroused by my erect penis...