After few days I went to Goa by first class reservation in train. When i enter in the train and get my seat I saw a beautiful women come in the train ...and she had seat near me. When train started moving I start sleeping and i fell on her laps. At that time I did not know her. She said to me and said to me what are you doing? I say sorry and got up and didn’t sleep again. After some time she was sleeping and fell on my lap. I didn’t say anything to her. When she woke up she felt guilty and say. I removed her bra and started to lick her perfectly round brown nipples. Her moaning went louder, indicating she was having fun. I lifted her and threw her on my bed. I started to kiss her lips while removing my clothes and her pajama. I started coming down towards her belly.I licked her navel, which sent chills over her spine. She was breathing heavily. I started to lick her nipples and pressed her boobs with my left hand. My right hand slid under her already wet panties and started to caress. Now having hit the age, I am almost 5’ 10”, weighing about 145 Lbs. pale Bronze skin and slim frame. Mona is also slim framed but plump at spots that are of interest; like her breasts and the bubble butt. Being a Sunday; I knew our parents would have gone to the church early in the morning and not return before late afternoon after the service was done, the attendees were fed and then everything cleaned put in order. I adjusted my hard swollen cock in my shorts and was glad to lay in the bed. I waited for her to explode and call me a pervert for using her panties to give myself a thrill, but instead she just grinned, turned around and shut the door behind herself. By now I knew that my masturbating session was over because my prick had shrank with the shock. I tried to get it going again but in the end I had to admit defeat so I threw her panties back to the towel on the floor and pulled my jeans back up.Over the next few days I tried my best to avoid my sister. But there were.