I'm a shut-in at home, only playing erotic visual novels on my smartphone, and I've set my sights on my little sister's huge breasts, wanting to perform acts from the games on her. One day, my parents went on a trip for their wedding anniversary. Seeing this as an opportunity, I took advantage of my little sister's kind nature and managed to get her to comply with me. At first, she was reluctant, but it seems she likes feeling good, so despite being embarrassed, she gradually started responding to my demands on her own…
