Kei, who attends the same university as me, is my first girlfriend. She's good at tennis and has a sporty figure. When I took off her clothes, I was surprised to find she had slim, huge breasts. Wait a minute...! Her body was incredibly beautiful and toned, something you couldn't imagine from her clothes. Seeing that body made me think only of sex. My penis became fully erect as it was sandwiched between her firm, white breasts. We just started dating, and since we liked each other so much, we had sex all day long！！
