My sister’s name is Sindhu she is my own sister & was elder to me by 2 yrs. She was a sexy slut with a huge pair of boob’s abt 38DD size & had a w...ll shaped sexy ass. Now lets go to the story. My sister got married 3yrs back & remained childless for 2 yrs as she was working. Her husband was a CA & was always on tour & was working for a us based company.She came home for her pregnancy but unfortunately her chilled passed away in her womb. Her husband then came to our house spent sum time with. "What's so funny?" He asked."I'm sorry but my new step-mom is almost young enough to be my daughter!" She said as she laughed happily about it."Are you ok with that?" Ron asked a little mystified."Actually if you knew my Daddy he has always had a thing for young women! Seriously though she and I have a lot in common." She said as she continued to smile as her blues seemed to glow with a hidden secret. "So how is Elly doing? Have you tried some of the techniques on her?" Actually I did yesterday. "No mistress I did not." Her eyes bored right into my brain. She clicked a few keys on the laptop, while I stopped breathing, and then concluded the interrogation."Alright I believe you," I let out a deep sigh of relief. She then gave me a stiff uncommitted smile, "I'll have the usual in the living room." I brought in her coffee, the laptop and the Walkie-talkie, and then turned on the TV, leaving the remote where she could reach and dropped to my knees. When finished drinking she pointed at. She was smiling shyly. To our disappointment, before maid could leave, aunty came back from her work. We sat there for some time and left.It became a habit for us to stay after class. I used to fondle her in the corner of the class after everyone left. Couldn’t do anything more as someone might come. We didn’t want to be in an awkward position.One day during a holiday when I was at home she called me at my home number (no cell phones at that time). She asked me to come to her home as she wanted.