Beautiful cousin with big breasts wakes up the new brother how to ride a horseBeautiful cousin with big breasts wakes up the new brother how to ride a horse. My grades haven't been good lately. Seeing that she was studying hard, my sister encouraged her by promising that if she got a perfect score on the next test, she would do whatever she asked. Encouraged, I did not leave my desk and studied hard until the day of the exam. And as a result, this time I got a perfect score, not just one point but the entire test. And as promised, my sister will do what I ask. During the three days my parents were away, I immediately gave her a Dwarf Rabbit costume to wear, although she didn't want to, but since I had promised, she had to accept. Not only that, but I begged him to call me master, suck my cock, suck my cock, let me have sex with you and even have sex with me! At first, it was because I kept my promise, but the embarrassment from him wearing revealing clothes, the excitement of calling my brother master, and even being intimate with my younger brother, these feelings seemed to have awakened my younger sister's desire. She took the initiative, wanting to be intimate with me, wanting to be my naughty little bunny. Three days went by, and finally, my parents came home and we returned to normal. But she still promised that as long as she got perfect grades, she would do anything I asked.