SW-248 I got excited seeing my brother's wife's body at the hot spring during our family trip. My sister-in-law also got heated up seeing my erect dick. Of course, we did it secretly without my brother knowing.

I came to the hot spring inn with my brother and his wife. Seeing my sister-in-law up close on the trip made me feel aroused and my heart race. As we soaked in the famous mixed outdoor bath, I got excited seeing my sister-in-law's body for the first time. Unable to hold back, I touched her body, and she, who seemed so serious, was trembling with excitement! The secret sex that I could never tell my brother about begins…