"Your cock is so hard... you must be cumming, right?" My girlfriend's beautiful and elegant sister suddenly turns vulgar! "Oh... your cock is so hard and delicious..." Her whispers in my ear and the lewd sounds of her blowjob make my brain melt! I don't care if my girlfriend is nearby, I shake my hips and cum shamelessly! Super thrilling NTR sex with my sister! If she finds out, it's completely over... I'm the worst kind of person who gives in to the dirty talk whispered in my ear by my abnormally lewd sister.