To prepare well for the upcoming exam, the younger brother asked his parents for to stay at his older brother's place in the city for a few months, hoping to study and be by his brother's - a beautiful, talented girl who is currently a student at a. The older brother is very kind and always reminds his to regularly tutor his younger brother, while the dresses very revealing and provocatively, when teaching at home. There have been many times when the younger brother had to try to control himself after seeing his sister-in-law's sensitive area. However, the fire near the haystack ignites, and in a fateful tutoring session, sheally posed in a very seductive position on the bed, exposing her underwear and plump buttocks. This time, the younger brother couldn't bear it any longer, so he boldly from behind and quickly inserted himself, catching her off guard. He thought he would be scolded and reprimanded, so he anxiously, but to his surprise, she wanted him to continue doing it with her again.