Arthur, a young man with incestuous desire

Well, well, well, what do we have here?

You poke the notebook in front of you several times, making sure that it's real and not some figment of your imagination. While you have seen the power of the so-called "rulebook" for yourself, you still can't believe that something too good to be true like this can exist.

Seeing the book doesn't suddenly disappear or burst into flame, you are finally convinced that the book is real and you are not hallucinating or in some prank. And since the book is real, then all the more reason for you to use it to your heart's content. You are eager to see how the book will finally make all of your hidden fantasies come true. But first, some basic rules. You erase the name of the coffee shop and replace it with "the world".

"New Rule: The writer of this rule will be designated as the owner of this rulebook, and only he can see, write, modify, and interact with this rulebook and the content within. Any other person will ignore the owner when he is writing in this rulebook."

"New Rule: This rulebook shall be indrestuctible, and the owner of this rulebook is able to summon it along with a pencil and eraser no matter where he is."

"New Rule: This rulebook shall have unlimited pages, yet the size will always be the same no matter what."

"New Rule: Any retroactive changes to the world that may result in a change of the owner's memories will result in the addition of said memories to the owner. This process will not cause any discomfort or detriment to the owner."

You look at the new rules, feeling proud of yourself. You are unsure whether to make the rules "old" or "new", but since the rules only apply to the rulebook and yourself, you decide it doesn't really matter.

Now that you have finally gotten all the basics out of the way, it is time for you to fulfill your hidden fantasies. Ever since the **** of your parents a few years ago from a car accident, you have been living alone with your younger sister. They left you both enough inheritance for you two to continue your studies and pay the bills, but other than that, you had to work part-time jobs in order to pay for your and your sister's daily expense. As you grew older, your sister was your constant if not only companion, and eventually the feeling of familial love changed into something forbidden. The breaking point was when you accidentaly saw your sister naked this morning after she finished her bath.

You have always known your sister, Vivian, to be a beautiful girl, with scarlet hair, vibrant green eyes, generous DD-sized boobs, and perky butt, but to see her in all of her naked glory only hammered the point deeper. Hiding your massive erection, you said you had an early class and escaped before your sister could notice you ogling her. That was a lie, you wouldn't have class until noon, which is why you are currently sitting in this coffee shop.

Even at 20 years old and in college, you rarely have had girlfriends, more focused in your study and taking care of your sister. Not that you are ugly by any means. You think your looks are at least above average and your body is quite fit from regular exercises and all of your jobs even if not at the level of those in sports clubs. But any relationship that you had never lasted that long once you realised you are attracted to your sister. Vivian too rarely have had boyfriends, preferring spending her time studying as well or in club activities, being a member in athletic club. You once asked her why, but she said that with you working your ass off for the family, she couldn't find it in her conscience to consider dating seriously at least until she enters college or you graduate, her being still in senior year of high school. You couldn't help falling even harder for her that day.

So now here you are, trying to calm down your mind from imagining your 18 years old sister naked and wet to no avail. Instead your mind just kept getting wilder, fueling your fantasy from just seeing Vivian naked to fucking her with wild abandon on your bed to finally impregnating her over and over again. It was during you imagining your sister round and heavily pregnant and her breasts swollen with milk that you finally noticed the rulebook on the table.

And now with this rulebook, all of those fantasies no longer have to stay as mere fantasies.