My yankee sister came to my room where I lived alone. I'm usually a scary younger sister, but her sleeping appearance is erotic, and she just looks at her pants and masturbates. That figure was seen by my sister. In an awkward atmosphere at once. Did I sympathize with me being scolded and depressed, "Aniki, are you a virgin? I'm just rubbing", but my excited sister Ma Ko got wet and slipped and inserted raw!