My older sister, who lives alone in the city, comes back to our parents' home and wants to take a bath with me! She's kind, smart, busty, and cute—the perfect older sister who's a knockout for me! Since it's been a long time, she invited me to take a bath together! Once we got in, of course, I couldn't help but be distracted by her chest! The tub was small, so her large breasts pressed against my body, and her ample chest was fully visible... Unable to resist, I got an erection!! I tried to escape, but my sister noticed and pulled me back! I thought I'd be rejected...