Yui Hatano's sister took her boyfriend home to play, and was agreed to stay by her boyfriend, she was very happy and happy, but she didn't expect that her sister had been watching the other boy since she entered the house. With a hot and charming body, she always finds ways to provoke the other guy to pay attention to her. Not unexpectedly, her boyfriend couldn't stand it, leading to the two clumsily having sex with each other while her sister didn't know what had happened. The sex scenes of the two are set up everywhere in the house with extremely sexy diverse positions.