It's been a really long time since I've written fanfiction, but I've been reading a lot of MaBill recently and wanted to try writing some of my own. Enjoy! :)

The war between them seemed to have always been. Not a single person in Gravity Falls could remember how long it had been going on, let alone how it had started, though they had their theories. Though they were unsure of how the war began, one thing was clear: Bill Cipher, the chaos demon who ruled over the Nightmares, was insane. That was a simple fact. He took what he wanted, did as he pleased. He cared not for consequence; rather, he seemed to enjoy pain. Not that it mattered if he did or not. Cipher was indestructible.

It was because of that fact, as well as particularly bad casualties at a recent battle, that the King of Gravity Falls, Preston Northwest, decided to seek a truce.

Of course, not everyone in Gravity Falls was okay with this. Stanford Pines, a brilliant scientist and inventor, advocated strongly for further resistance. He had fought Cipher's forces for decades, even fought against the chaos demon himself. He was considered an expert on the Nightmares. When the announcement was made to the capital's most important family heads, Stanford Pines exploded into rage. "Peace?" he shouted. "Cipher knows no such thing! He'll murder us all before signing anything!"

But the other families were tired, and King Preston wanted to save his family's wealth. Continuously funding a war was beginning to drain the royal coffers. "Your vendettas will not take down this country," Preston declared. "Centuries of war has done us no good."

There was nothing Stanford could say that would change their minds. The announcement was made to the kingdom, and the next day the families stood waiting in the throne room for Cipher. The King and Queen stood regally with their daughter, Pacifica, in front of their thrones. The other families stood on either side. The people of Gravity Falls lined the sides of the hall, curious to see the creature that had caused so much death. Stanford glared as he stared ahead, waiting for that terrible demon to appear.

"Relax, Ford," Stanford's twin, Stanley Pines, patted him on the shoulder. But he too watched the doors.

Ford's eyes never left the door. "They don't know what they're inviting in," he muttered. "The capital has never dealt directly with the Nightmares, Stan."

"Worse case scenario, we take the kids and run," was Stan's response. The brothers glanced at their great-niece and nephew. Mabel, who was never one for serious situations, was poking her own twin brother, who was trying his best to ignore her.

The hall doors began to open, and everyone looked forward. Bill Cipher strode in with a few Nightmares just for show, a wide grin on his face. The demon took on a human form for the occasion, a top hat upon his blond head and an eyepatch over his left eye. He swung a cane around as he loudly exclaimed, "Woo boy! It's been awhile since I've physically been here!" He winked at a couple of people whose dreams he haunted. Stan moved in front of Dipper and Mabel.

King Preston gave Bill a smile. Despite this, Ford could tell that he, like everyone else there, was nervous. Guards were posted around the room in case Bill tried anything, including some guards dressed as common folk. "Bill Cipher, I trust that your trip here was fine?"

Bill floated up to the King, doing a few loops. "Terrific! I was only shot at twice! It felt great!" He laughed and leaned on his cane. "So, a truce, huh?"

"Uh, yes," Preston cleared his throat. "I want you and your Nightmares to cease attacking my people. In exchange," here he gestured to thirteen large chests, "I will give you-"

Bill cut him off with a laugh. "I don't want your gold." He snapped his fingers and the chests burst into flames. Several servants rushed forward to put them out.

Ford narrowed his eyes, "What do you want?"

Bill looked at Ford like a child seeing presents for them and grinned menacingly. "Sixer! Long time no see! How's the eye?"

Ford said nothing, but asked again through gritted teeth, "What. Do. You. Want?"

"Hmm, what to get for an immortal being of pure energy? A new castle? A pony? Teeth?" The demon's eye moved across the room. Finally, it stopped. But before Ford could follow what he was looking at, Bill turned to Preston, chest puffed out to imitate a gentlemen and donned a serious expression. "I will honor your demand, Good Sir. In return, I want her." He held his cane in his arms like a rifle and pointed it at Mabel Pines. Her eyes widened. Immediately Stan started shouting at the demon; for once Ford didn't try to stop his outburst. He himself was seething with rage at the thought of Bill even thinking of Mabel.

"You'll have her over my dead body!" Stan ran forward to punch Bill, who easily moved out of the way. Ford grabbed him from behind and pointed a gun to his head. The demon laughed. Bill's Nightmares moved forward to defend their King. Stan moved to defend his brother, as did Dipper. Mabel tried to calm then down.

"Guards!" Preston shouted. He pointed at Stan, who was then restrained. "Everyone needs to settle down." He gestured to Bill. "Will you swear to uphold peace if we give you the girl?" More shouts rang out in protest, but Preston raised a hand to silence them.

Bill crossed his heart and nodded, that wild smile never leaving his face. Blue flames engulfed his hand which he then extended to Preston. "Do we have a deal?"

The King took his hand.

Ford, Stan, and Dipper shouted.

Mabel sobbed.