On a long-awaited family trip, we went to a hot spring inn, and I ended up taking a bath with my sister! Since we're siblings, she didn't hide her body at all, and her magnificent huge breasts were fully visible, making my heart race! While washing her back, I couldn't hold back anymore and got an incredibly hard erection. Noticing this, my sister also started to get aroused and grabbed my erect dick. Then I sucked and squeezed her breasts, which are exactly my type, and even did some tit-fucking! Although I can't tell anyone, it was incredibly pleasurable, and we had super amazing sex!
