Today was the first day I went to my girlfriend's house. She is living with her sister Katou, she is a nurse, often having to work at night. Whenever she was tired, Katou often fell asleep on the sofa. She also wore a very wide outfit that made the big breasts exposed before my eyes. I always tried to control myself, but when my girlfriend had a job to leave, I could not stop myself anymore. I involuntarily approached her, my hand has put on her big breasts since I didn't know. When caressing these big breasts, Katou did not seem to show signs of waking up. So I became more and more bold. Buried his face into these big breasts, sucked them, rubbed them into them and Katou did not wake up! At this time, I was able to be extremely assured, proceeding to put my dick into her wet cunt ...