"Shooting cum into your pussy like that won't leave a trace, right?" I was seduced by my girlfriend's own sister. She has a perfect body, a beautiful and dignified face, but hidden deep inside is a wild beast that is always hungry for sex! As long as my girlfriend was absent, she immediately found all kinds of ways to squeeze out my sperm. Because in order to avoid detection, she always used her mouth to suck it clean to the last and swallow it all. She even hid my sperm by letting me all the way inside her uterus! The feeling of stimulation and fear of being discovered made me feel even more excited. She kept sucking my sperm clean, not even leaving a single one for her sister!