Prologue
Long ago man did not exist. There was only vast darkness of the void. Two creatures did exist there though, a pair of demon brothers. Their names, Will Cipher, and Bill Cipher. Will was the older brother, he was kind hearted and sympathetic towards his twin brother, while Bill was the younger brother. Bill was harsh and pointed out flaws that his brother had. They both had gifts, and soon those gift's flourished. Will used his magic to create life, to create man. At first Will left man alone, with only food, water, and fire. Man lacked in knowledge for many years, Bill and Will watched man face the harshness that Will's nature produced. Bill soon took advantage of man's existence using the cruelness of nature to take the lives of the wounded and sick. Will had agreed with Bill that man was venerable and that to keep man alive and healthy that the sick and wounded would pass on into another realm, a realm Will called Haven.
Slowly Will saw the potential man had to evolve. That they could build civilization for their families, and children. So, Will stepped into their world. He visited a shaman and spoke of who he was. He rested his hand on the ground before the woman who was astounded by Will's powers. He told her of his hopes, and of his plans. He gifted the woman with knowledge, and belief. He then rejoined his brother in the what they called home, the void, Bill shook his head at his brother.
"Why give man knowledge? They are merely just fragments, mistakes, they are not like us." Bill hissed to his brother.
Will raised his hand. "Brother, you are wrong to judge man so quickly. For years know we've watched man face nature, their civilization lacks, they use tents and caves, man deserves to believe, and have knowledge like we do. Do you not see man's potential like I do, brother?"
Bill scoffed. "I am not blinded by their foolish ambitions. They are not like you and I, thus they are merely my prey in the darkness. I am not like you brother, my gift is to kill, not to create life. I watch the pain of the families I take the soul from. I crave the kill, know that man has knowledge, they can use the land unlike before, they could develop remedies to heal the sick and wounded. This I must object to. If man can heal themselves unlike before I will not be able to do my duties!"
Will looked at his brother with a soothing look. Bill's tenseness was washed away. He looked away from Will growling. "You dare use your power on me brother?"
"Please be passionate, Bill. Let us observe man's behavior, then we will decide man's fate." Will exclaimed. "Fine, but we will do this toghter, brother." Bill sighed as he finally agreed.
More years passed and the more Will guided man to build civilization, even going as far as to give a select few powers of their own. One-man particular, by the name of Haven Pines was known as the greatest alchemist that had ever been.
Soon Bill grew more and more angry. Man had colonized and grew in numbers and forces. They where becoming more and more powerful. Bill felt infer-er to man and its forces. Bill believed that he and his brother alone should hold knowledge and power. Soon Bill begun to plot behind his brother's back.
Finally, when Bill was ready he used his magic on man and its humanity; he brought forth his plague to smite man to remind his brother that he alone had the power to destroy his creation.
Will was shocked by his brother's actions. He quickly visited Haven Pines in his dream. He told Haven about his brother's plans and of why there was so much death and carnage, that had been forced upon man.
"I can help you Will. However, to stop this, it requires…" Haven hesitated for a moment. "It requires that you both take a physical form here on Erath. I will seal you both away in a pair of human vessels. My Daughter and Son."
"Are you sure you want to do this Haven? I understand how difficult this situation is to take in, and how much I am asking you to sacrifice. If you seal us within your children's soul's from now on we will reside in your family's bloodline, and that we will only be sealed in Pure Blood vessels. This also will require alchemy to be passed down in every generation of Pines to come. You must also know that each Pure Blood vessel is to continue to preform our duties, only after they learn to control our powers. Bill's vessel, if Bill isn't controlled, a single touch can kill a man. Do you understand?" Will said to Haven.
Again, Haven agreed to Will's terms. Will returned to the Void.
On the Day of Judgment Will challenge Bill to take a physical form and fight him. Bill accepted the challenge without a second thought. Both took on a physical form and fought. Haven stood on a cliff above them and re-sighted a passage. "Potestate terrena sit vel ignea Aquam, Aerem Creationis Terra vitam et mortem et portus tuos elementa adsit finis fusionem obsigno daemonis creationis daemonis mortis animabus familiae . Claudite ostia paries dis nova ruinae?"
(Translates: By the power of Earth, Fire, Water, Air, Creation, Terra, Life, and Death I Haven call thy elements to aid me end the chaos and seal away the demon of Creation and the demon of Death within the souls of my family tree. Close the doors of the destruction of our Gods and bring forth a new era!)
Bill and Will both cried out before disappearing into blue smoke and black smoke. The blue smoke entered Haven's daughter while the black smoke entered Haven's son.
Haven wepted. "Hope, Neil. You both will have to learn so much and pass down the knowledge of the two-demon brother's and their powers; and live lives I never thought you'd have. Forgive me, my lovely kids."
A/N: Hey guys here's a cool story that goes with the kids my cover art and or Pictures where ever you clinked this story from. It's possible that there are spelling mistakes or grammar mistakes. I'm not perfect so please bear with me. But let me know what you all thought of this story's prologue and if you are interested in seeing another chapter. If you do like my style of writing or are interested in other Gravity Falls stories check out my other stories and show them some support. I also have a deviantart account hiccupandtoothless22 is my username, I post a lot of artwork on the account based on my stories or for videos on my Hiccup Haddock channel, a video to find that channel is Dipper: Welcome to my Life and I also have another channel strictly for Billdip content, called Billdip Pines, the video to find that channel is MMD Older Dipper Don't Stop Now, if you are interested in any of my content please go check it out, watch, add, favorite or subscribe. It will let me know that you appreciate the content I make. Thanks guys and I'll possibly see you in the next chapter?