Des：My sister, a school girl, was taking a nap with her panties exposed. The brother was so excited when he saw his sisters pantyhose that he immediately grabbed his dick and had sex with her. However, he was soon noticed and regarded his brother who had a crush on his sister as a pervert, but he gradually began to sympathize with him. Although her sister offered to help her, she couldnt reach orgasm easily. She just didnt have enough fun...!