During the scorching heat of midsummer, I visited my father's friend's house during summer vacation. During that time, my friend's wife, Yuna, helped me with my studies. Yuna is a beautiful woman with an intellectual aura... and above all, she has big breasts. I couldn't stop my heart beating when I was studying because I was intrigued by her bulging chest. Today, as usual, we were doing our homework together, and when I was captivated by her sweaty chest, she suddenly brought her sweaty chest close to my body. Then, Yuna smiled seductively and attacked me...