JAV 365

A kind-hearted big-breasted sister takes off her skin and clothes to train her brother, who was dumped by his girlfriend because of premature ejaculation! She slowly inserts him into her vagina, and then she uses a slow piston to raise him up, and stops him just before he is about to ejaculate by swinging her hips at a high speed! The plan was to ejaculate, but he couldn't stand it and had several vaginal outbursts. From that day on, we have been managing his ejaculation to improve his premature ejaculation every day! Will he be able to improve his premature ejaculation by enduring the rushed riding position where he is suddenly switched from low speed to high speed grind?