Till that summer I don’t have any sexual feeling about my sis more than that I hate her. But that entire thing changed that summer. Being its summer...that is so hot city one cannot sleep in our room being it’s so hot and we don’t have enough space to spare with our guests. All things gone fine. In the morning mom and dad gone to work and we four the bro and sis enjoy the day with our aunty. All the things start at the first night of the summer, being there is no apt space my mom arrange bed as. I look on the hole and saw she was just placing the blouse and bra on the hanger.Then she took she started to pull her top from the top, she was not wearing any bra inside so when se took out the top I can see her whole naked back now. I was just wishing please turn around so that I can see her naked boobs once. Then she did what I was wishing for, she turned around and first time I saw a pair of naked boobs, that too of my teacher and would be bhabhi.Both her boobs were defying gravity, there. I was being squeezed between all the people. All of a sudden, I felt a hand around my waist. I thought it was by mistake and I didn’t care. But the person started to grope me. I could not even turn to see who it was. I tried to stop him but I was not able to.It was the first time I was experiencing groping in the train. The person then moved his hands over my ass and began to grab it on top of my skirt. That day I was wearing a long cotton skirt with a black shirt on top. The stranger then. Where the fuck is it?” “Oh, that's on the top shelf.” The top shelf, of course, being eight feet high. Dannie looks for the step ladder, which as always is no where to be found. So being the strong willed woman that she is, she starts to climb up the shelves. “WHOA!” I exclaim, as I move over and put my hands on her to make sure she doesn't fall. At this point, my thoughts were solely on her safety, but she looks down at me and with a wink, says, “Are you having fun down there?” It was then.