You can't let go.

It's been a long 24-plus-years. You have been with your brother sexually longer than you have not. It is the life you have grown accustomed to. And to sell it straight it the cock that you have grown accustomed to. And now, as you feel his cock slip inside you for what can only be the last time, you find yourself filled with unimaginable sadness as you try to picture your life when you are never with him again.

A long time ago, you secretly hoped that he would find out who you were so that this all would end and you could move on with your life. But whose times have long passed. At that moment, you come to the realization that he was only your brother for roughly 19 or so years, while he has been your lover for over 24 years. Thus he is more your lover than your brother now, and you aren't about to let go of your lover. So you lock your heels behind his ass, pulling him as deep inside of you as possible, and hold him there as you say: "Well, if this is going to be our last one, then we just can't ever stop."

Your brother moans, "But I know you're my sister."

You laugh back at him as you run your fingers gently over his strong chest." And you're still hard inside on me, so it clearly doesn't bother you."

Brother grunts as he tries to move against your heels. "But the contract?"

You gently kiss him before answering, "Yea, I know, but I just realize the thought of never being with you again scares me more than the thought of letting you know it me as we do it. So unless we can find another situation, I am never letting you pull out of me." You giggle and kiss him again. Before sarcastically saying: "If you can't, you are just going to have to get used to doing everything with your dick inside of me. But oh no, I doubt you can come up with an excuse to your wife that she will believe."

Your brother smiles back down at you "we could always change the contract?"

You smile back at him, "I would very much like that." and pull him into a deep french kiss.

You both could finally enjoy the act now that you both knew it wasn't going to be your last. However, just to be sure, you did not let him pull out until after you called your father to bring the changed contract, and YOU BOTH SIGNED IT.

Within three months, all five of your daughter were hired by the company, and your son took your father's place in the management of the company. Of course, the company quietly bought all your girls their own apartment within walking distance of yours.

You gave birth to your brother's final girl nine months later. Within a period of 15 days on either side of the day you gave birth, you became a grandmother to 6 beautiful baby girls. And one baby boy (two sets of twins).

His wife was pissed to the point of filing for divorce, that some unknown kid was being brought into the company, and here kids were getting nothing. But after seeing that she would get nothing if she left, she quickly withdrew the papers.

Much to Your pleasure, Your brother came over almost every day to either have rotated having sex with you with his son or to act as a father to his last daughter. Although the goal was no longer to breed you. Though it happened twice, your son was the father both times.

The first time was differently intentional, as you caught your son counting down the days until he gave you his child. And the moment he could, he made sure to fuck you every morning, night, and at lunch until he was sure you were pregnant. The second time was different and less intentional, as no one was really trying to make it happen, but they certainly were not any less happy when it did.

I guess your son and brother really like seeing your belly filled with your son's baby because they both were visibly sad when the Doctor finally said it had to stop.

That is what became of your life.