Their brother was taught to have sex by his sister, the cousin was quite old but was still broken up by his lover because he didn't know how to have sex, seeing that his brother was upset, the sister tried to help his cousin, called his brother to the room, and then the lewd cousin taught him how to have sex, afraid that if he said the theory, he would forget, so his sister let him practice it on his body, and he was carefully instructed and his cousin was so delicious, so his brother learned very quickly. Their brother was taught to have sex by his sister