As I walked into the bedroom, I couldn't believe what I was seeing. My innocent Indian school girl sister, only 18 years old, was engaged in a hardcore, rough sex session with a stranger. She looked so naughty and passionate, her moans filling the room as she enjoyed every thrust. I couldn't tear my eyes away, mesmerized by the raw passion and desire on display. Behan ki chudai dekhi, I whispered to myself, feeling a rush of excitement at the forbidden sight. It was like a fantasy come to life, a glimpse into a world I had only seen in movies. I knew I shouldn't be watching, but I couldn't help myself. And as I watched, arousal building within me, I knew I wouldn't be able to resist joining in on the action.