Hiromu's father remarried, so he gained a stepsister. Hiromu is quite shy, so he and Anna have not been able to get along. His stepsister is very beautiful and carefree in front of him. As it is midsummer, the weather is quite hot. Anna often wears shorts, with a T-back thong, walking around the house. Anna asked him to help with a massage because she was feeling tired. Being inexperienced, Hiromu quickly became aroused by this very alluring situation. When Anna asked him to massage her buttocks, Hiromu could no longer control himself! He lost control and could not stop! Being his first time, Hiromu quickly ejaculated. But it's okay, he can ejaculate multiple times in a row! Initially reluctant, but the huge, stiff cock, the strong and intense thrusts, and the pleasurable sensations made Anna unforgettable. She actively approached Hiromu, wanting him to fuck her more, satisfying her sexual desires. And their twisted relationship continued from there...