As usual my dad and mom had gone out for their works; TOFEL classes were also closed due to students strike demanding for qualified teachers. Ravi had...gone to his home for 2 days and he would come only on tomorrow as he said before to go. One important thing, my les partner-my sister in law had already left us as brother called her to US.As I had no work to do, I curled up on the sofa, lazily pushing the buttons on remote to change the TV channels. I was wearing a long sleeveless white round. She felt him come,felt the warm sensation as it suffused itself throughout her body,reaching her nipples and her lips in a crescendo of nervous sensation.She bent forward ever eager to take more of Roberts prick within herpliant mouth.She sensed that he was about to come and readied herself for the floodof his juices. He shot his spunk deep within her mouth; she could feelthe hot salty juice as it hit the back of her throat. She began toswallow as he continued to ejaculate, she hoped to swallow. I was just about to cook some dinner and Marie was just leaving."I turned to my side of the room and saw that my sister's panties still was on top of the commode where she had tossed them. I sat on my bed and looked at my sister. Would it show that she was without any panties? To my disappointment I couldn't see anything out of the ordinary. Maybe a little blush on her cheeks."Bye," Marie said as she disappeared through the door and a minute later I heard the door close after her.My sister went. After we finished sex suddenly we could hear him in the kitchen. We got up and dressed quickly to act normal."I didn't know you were here," she said to her son."I just arrived," was his reply.When she was out of the room I said to him "did you like what you saw? Why don't you come back the day after tomorrow and join us?"Two days later Akiko and I were in the bath. A Japanese style bath is deep where the water goes up to one's chest and you can sit in it comfortably. She was sitting with her.