Mei, who attends the same university as me, is the first girlfriend I ever had as an Amateur virgin. She's a good tennis player and sporty, but when I took off her clothes I was surprised to see that she had slim, beautiful big breasts. Wait a minute...! I couldn't imagine her beautiful, toned, fair-skinned body under her clothes, and when I saw it, I could only think about sex. My dick got fully erect when it was sandwiched between her firm, pure white breasts. We'd only just started dating, but we love each other so much that we had sex all day long without even realizing it!