A illegitimate child raised in the countryside, a daughter who is rich and wealthy in the city meets for the first time, the brother and sister formed a bond. When they were alone in private, the atmosphere was tense, and the smoke surged. One day, in the corridor, Zhong Yi incited Lu Pei with malice, Lu Pei was impulsive, stretched his foot to trip her, Zhong Yi fell down the stairs, kneaded his brain, and became a fool. He was as low-intellectual as a seven-year-old child who fell stupid. For some reason, he especially liked to stick to Lu Pei, but Lu Pei still hated her, and often bullied her secretly. When Zhong Yi held the pillow and said that he wanted to sleep with his brother, Lu Pei did not refuse. What he thought was that after turning off the light, he could intimidate this fool again.However, when Zhong Yi, who had thin clothes, was lying on him, the girl's soft body was close to him, and the faint fragrance penetrated into his nose. He was very aroused by Lu Pei, who had a bad physiological reaction. He took off his pants and tricked Zhong Yi to lick the thick and thick object in his crotch. He even pressed her under his body and broke her body. The two of them secretly intercourse in private. Just under Zhong's father's nose, the truth was revealed. One day, the stupid Zhong Yi became smarter, and she recovered all her memories and remembered that it was Lu Pei who tripped her down the stairs... 1v1, double place, he, orthopedics, and later abuse of the male protagonist