Returning home to my parents' house after a long time, I was lazing around in my messy room, dressed sloppily. Right in front of me, my innocent older sister suddenly started masturbating, shamelessly indulging her otaku-like desires. Her big-breasted, thick-thighed body was clad only in a braless camisole and panties—an irresistible sight. As she pleasured herself with a vibrator, she grabbed my cock, and I couldn't resist sucking on her sweat-drenched, braless tits, her nipples clearly visible through the fabric. I gave her a blowjob until I erupted, and she swallowed every drop. As she sweetly sucked my nipples and held my hand, she guided my cock into her pussy. Her massive breasts tightly squeezed my cock in a titfuck, followed by another blowjob until I came again, which she eagerly drank down. Then she put on a condom and we began full-on sex. She straddled me in cowgirl position, swinging her breasts wildly as she grinded her hips, making me lose control and creampie her bareback. Next, I took her from behind, grabbing her huge ass and thrusting deep, pounding her hips like a nail, unable to hold back as I shot another bareback creampie. Oblivious to it all, whenever she begged for more, I gave in to desire, thrusting again and finally pulling out to cum on her.