I stayed over at my cousin's older sister's place for the first time in a while. When I saw her again, I was stunned—she'd grown into a busty beauty that made my heart race. Early in the morning, as I was sneaking a peek while she undressed for a bath, she noticed me and cheerfully said, "Let's get in together." With her big breasts right in front of me, I started washing her, and my cock naturally got hard. She happily grabbed it, then guided my hands to her breasts and crotch. Breathing heavily, we couldn't stop—we ended up sucking each other off in the bathroom, then had full-on sex.