My long-awaited couple's trip with my girlfriend! But then her sister decided to come along too... When I met her on the day, she had huge breasts, the complete opposite of my girlfriend, and I couldn't help but look at her... And at night, while she was out, she seduced me with her breasts! "Do you like big breasts?" "I'd let you cum inside me." My girlfriend is usually indifferent, so I couldn't stand it anymore! Whenever I found a chance to cum inside her sister, it turned into an affair trip...