When I met up with a female friend who lives nearby and who I used to go to the public bath with and take baths with since we were kids, she had become a really cute girl! When we got excited and nostalgic, she casually said, "We were bath friends, right? Let's take a bath together like we used to," but since we've both grown up, my childhood friend was in the bath with high excitement, while I was confused. But I got an erection. Then my childhood friend noticed it...