I started living with Yuri around last winter. Today, Ms. Marin – Yuri's sister has to go on an unexpected business trip. Because she couldn't find a hotel, she stayed at our house for a week. Maybe because Yuri was here, she was so carefree, always in a state of "defenseless" exposing her beautiful little panties and big buttocks in front of my eyes. Especially when she finished bathing, Ms. Marin comfortably walked around the house naked, making me inadvertently admire her beautiful body like a model. I couldn't stand it anymore because of my sister's irritation, and the next morning I had to turn on sex movies and masturbate alone in my room. She was masturbating when she suddenly entered my room and witnessed the whole thing. But she didn't leave at all, but went to get my phone and watch the I was playing. I was so excited that I didn't care about it anymore. I rushed over and took over this beautiful body! At first, she seemed to resist, but later on, she moaned louder and louder, clicked with me, and climaxed over and over again! And our misguided relationship began from there, we even had sex right next to Yuri because it made both of us feel more aroused...