"Big brother, it's morning. Wake up!" My sister, clad in her uniform again today, sneaks into my bed, defenseless. She playfully starts to fondle my nipples, then her arms gradually reach down to my lower body. The soles of her feet, wrapped in knee-high socks, stimulate my breasts, and I can feel the sensation of her tongue through my panties... From that day on, our relationship changed. Her breasts look ready to burst as I take off her sailor uniform. Under her panties, I can see the pubic hair that has just begun to grow. Under the same roof, and sometimes in a hotel. Days of nonstop sex begin...