During a hot spring trip with my mom and aunt, I ended up in a dream-like situation where I was treated as a child and left alone with my aunt in the women's bath! At first, my aunt was relaxed, thinking 'it's fine because he's a kid,' but when women started entering the bath and surrounded me, I got fully erect, changing the scene completely. Noticing this, my aunt secretly began stroking me in the bath, leading to an eruption! Yet, with my dick still hard and throbbing, she couldn't resist and inserted it into her pleasurable hole. The intense thrusts kept the excitement going, and both my aunt and I got lost in repeated actions, truly enjoying a secret adult hot spring date. This work shines with its realistic scenario and my aunt's gentle yet bold performance, making my heart race non-stop while watching!