When they were little, my sister and I used to take baths together, but now we've grown self-conscious and shy, and we're separate. But when our parents are out, I burst into the bathroom while my sister is taking a bath and we wash each other's bodies! My sister's body, which I haven't touched in a long time, starts to swell up slightly, and we escalate into erotic acts... At first, my sister is embarrassed and reluctant, but she can't resist the pleasure of having her shaved pussy stimulated directly, and we play a forbidden game with my brother. My sister cums as his hard, thick cock penetrates her small slit...