When I fell asleep in the living room, my younger sister was worried about me and covered me with a blanket. - My younger sister, who is around my age, seems to be very interested in the opposite sex, and she looked at me so hard that she looked at my erect penis. - When I noticed this, I jokingly said, ``If you want to hear what I'm saying, you can touch me,'' and he replied cutely, ``Really!?'' - I got carried away and thoroughly enjoyed my sister's body, masturbating with each other, then giving her a blowjob and titty fuck.