Tarun had been screwing his elder sister Nandini for more than a month now. It started when Nandini visited her parents and brother during her summer holidays. She had planned to stay with them for her whole vacation. Last year Nandini had moved with her boyfriend to another city and was pursuing her studies there. She was twenty and was one year older to Tarun. Tarun had had a very stormy relationship with her sister during their childhood, always fighting and cursing each other.

But this year when she came home, she was altogether a different person. She appeared much matured and her manners were more feminine now. She was no more volatile and even with Tarun she was very refined. Tarun was surprised to see such a drastic change in his sister and he also reciprocated in a positive manner. First Tarun in their life they looked like enjoying each other company.

One evening when their parents were visiting some friends, Tarun and Nandini sat in the living room, watching TV and recalling the older days. Suddenly the topic changed to their sex life. After initial reluctance they slowly opened up. Nandini was more vocal about her relationships. She was separated with her previous boyfriend and for the Tarun being she was living alone. Tarun had been dating a girl but he was still a virgin. Nandini told him about her encounters with her friends, the city life, the gangbangs and many more things she had experienced during her stay at university. No one knew what happened actually, but one thing led to another and after a while fully naked Nandini was lying on the sofa and her equally naked brother was lying between her open thighs with his joystick completely embedded into his sister's shaved pussy. That night Tarun lost his virginity to his sister.

From that moment they never missed any chance and had been fucking furiously at every opportunity for last one month. Every night when their parents, Danesh and Janvi, retired to their room, Tarun would sneak into Nandini's room and they would enjoy the lustful incestuous relationship. Initially they were worried about getting caught, so they took every precaution. But later they became lax and as soon as their parents' room was closed, they would start hopping in the bed. Danesh was no problem as most of the Tarun he would be out of town on one or other official trip and Janvi seemed to be interested in nothing at all.

So far every thing was going fine, but one day they had to pay for their carelessness. Just when, Tarun, after emptying his balls into Nandini's pussy, was moving from her sister, the doors flung open and Janvi was standing at doors shaking furiously. They tried to recover but it was too late. Janvi was awfully mad with anger but she didn't know what to say to her now adult children. She asked them to put on their cloths immediately and told Tarun to go to his room. Tarun put his cloths back and meekly retired to his own room.

The very next day Nandini returned back to her university. Tarun was furious. He was now deeply in love with her sister and her sudden departure has left him shattered. He was terribly missing the fun that he had had with Nandini; her creamy thighs, her gorgeous cunt lips and above all the fuck sessions both had enjoyed so immensely. In a short span of time, Nandini had enlighten him about the various facets of carnal pleasure and together they had explored each of them. Be it licking, sucking, fucking, fisting, anal licking, anal fucking; Nandini had tried to educate her little brother in every possible way and her pupil had excelled in every field.

Though, he knew that it was their own fault that they were caught, but he put the blame squarely on Janvi. He was infuriated with her mom for sneaking into their privacy. He was also worried about how Danesh is going to react when he would learn about the incident. He was lucky that Danesh was not in the town and would return only after about a week. Tarun knew he had to do something before Danesh's return. After deep thinking a solution finally came to his mind; if he could somehow manage to fuck his mother, she could then be forced to keep mum. The only problem was that how would he going to convince his mother for the fuck. Since the incident he had not even talked with Janvi and both were maintaining a deliberate silence. Janvi was a very religious lady and he was sure that she couldn't be persuaded.

Slowly the realization came to him. "I am gonna force myself on that old bitch." He murmured to himself.

Janvi was forty. She had come from a very conservative family. She met with Danesh when she was only eighteen and immediately fell in love with him. She was young, innocent and above all very beautiful. Danesh also fell for her charm and they started dating. Three months later when she got pregnant they decided to marry. Danesh had completed his graduation and was employed with a good job. When they married she was in second month of pregnancy. Nandini came after seven month of their marriage and Tarun one year later.

Danesh was very ambitious and hard working. He devoted most of his Tarun to his carrier and over the year he rose to the position of vice-president of his company. Janvi chosen to play a role of a devoted mother and a housewife. She kept herself busy with her kids while her husband was mostly away on one or other official trips. Their sex life was very straight; more like fill it, forget it and that too once in a while. Coming from a conservative family she didn't expect more. Danesh was a good husband, a good father and a very caring person and Janvi still loved him very much. But he was so busy with his professional life that he didn't have much Tarun for his family. They had less and less sex now; she didn't even remember when Danesh had fucked her last Tarun.

But, now Janvi was confused. The episode between her son and daughter that she witnessed through the opening of door they had forgotten to close, made her baffled. She was not able to explain why she waited for Tarun and Nandini to conclude their activity. Why did she watch through the whole episode without interfering? Why there was a sense of some deep hidden excitement within her along with the feeling of shame, disgust, and anger when she watched her son fucking her own daughter? Why? She closed her eyes. But the images kept coming back to her; Tarun's handsome face buried deep into her daughter's pussy, Tarun's monster cock moving in and out of her cunt. She felt ashamed and tried to shift her mind elsewhere, but images remained there. She could not understand why it was happening to her. She had always been a faithful wife and a dedicated mother. After initial few years, sex never was a priority in their marriage. Then, why this was happening to her. She had no answer. She was developing new immodest feelings and that was troubling her.

Tarun plan was ready and he was geared to act. Before his relationship with Nandini, he never had any erotic feeling towards his mother. Janvi appeared too straight to be a good fuck. She was too passive to be able to arouse a nineteen-year-old guy. But now his perception had changed. His plump mother was still very attractive, though she didn't seem to be aware of her feminism. He lately tried to masturbate thinking about fucking her plump cunt and he came so hard that he himself was not able to believe that imagining his own mother in naked could give him such a hard on.

In the night mom and son took there dinner in the kitchen. Janvi was still buried in her thoughts and was avoiding talking to her son. Once the dinner was finished Tarun broke the silence.

"Mom, I've something to discuss with you. Can I come to your room?"

Janvi looked at her son but didn't reply. Tarun waited for a while and assumed her silence as acceptance.

"Ok, I'll come to you in a while?" He took dishes from the dining table, put them into sink and left for his room. Janvi watched him going and got herself engaged with finishing her routine. Once her work was completed she also retired to her room.

Tarun was waiting for Janvi to return to her room and as soon as she closed her door, he was there. He knocked the door lightly.

"Mom, can I come in." Without waiting for reply he entered into room. Janvi was sitting on her bed looking him questioningly.

"Mom, I have something very important to talk to you."

"I know what you want to talk about." Janvi replied rudely. "And make sure I am going to tell everything to your father."

"No mom, you aren't." Tarun's tone was nasty. " I want you to keep this secret with you. Bringing father into it is not going to revert anything. Nandini and I enjoyed fucking each other. You are no one to interfere with our personal life. We both are adult."

"Being adult doesn't mean that you are entitled to sleep with your own sister." She was aghast with the language he was using. " You can't stop me from telling the truth to your father."

"Yes, I am." He retorted. " I will make sure that you don't open your mouth when dad returns. If you don't agree to me, I am gonna fuck you like I fucked Nandini and that will keep you silent."

" How dare you..." She tried to stand in deep anger.

Tarun suddenly grabbed her and pushed her violently to the bed. The next thing she realized that she was lying on the bed and Tarun had climbed upon her and pinning her on the bed. She struggled to get free, but she was no match for a stud like his son. Tarun had come prepared and after pinning her down, one by one he tied her both hands to the sidebars of the bed. Janvi was tossing furiously without any success. After finishing with her hands he then tied her both legs also. Finishing his job he left her struggling and climbed down to the side of bed to watched his handiwork. Janvi was lying on the bed in astride position with hands and legs tied to bed tightly. Failing to protect her, Janvi was now crying and tears were rolling down her cheeks.