Choosing this one first, I see. Glad to know the human race is in good hands. (Warning, this and the other chapter are going to be SUPER LONG. I wanted to make these super well-written, but that was at the cost of me not thinking how long these are actually going to be. So what would normally span between a few chapters is now one really long chapter. Have fun~)

Here you were. One more ridge to climb over and you would be practically in Bill's face. You climbed diligently, full of purpose and determination. You knew exactly what you were going to do the moment you got up to the rock Bill should be on top of.

You were going to help him.

You climbed over the ridge and beheld a sight that would have given anyone a heart attack. Etched into the snow were arcane runes surrounding a satanic-looking circle, a triangle being in the middle. Instantly you recognized the glowing geometric shape that was Bill Cipher, and you hurriedly climbed down the rest of the ridge, tripping and tumbling the rest of the way.

Bill must have heard the dull fuff coming from your impact into the snow, as he turned away from whatever incantation he was performing to look back at freezing, snow-covered you. You were shaking, not from fear, but from near hypothermia. You began to realize how little energy you had, as you could barely lift your head up and out of the snow to look back at Bill. Your hat was frozen to your skull, and your jacket made horrid cracking noises as you slowly got to your feet to stand, pale and exhausted, before Bill.

Bill's one-eyed expression was... curious. It seemed like a worried look. Like something you had done had scared him. Neither of you spoke a word for what felt like eons. You just stared at each other.

You were the first to speak, "Bill, let me join you."

Bill instantly looked surprised. His pupil narrowed, looking at you suspiciously. "You? You want to join me?" he asked, suspicion dominating his tone, but morbid curiosity lined the edges of his voice. "Why the sudden change in attitude, hm?"

"I'm... I'm sick of being treated like some sort of pet. Everyone wants me to do exactly what they say while they pat my head. I would prefer to rule over everyone else," you responded. You could feel the cold creeping up your spine, but you ignored it.

Bill chuckled. It was that familiar "you're cute" chuckle he had picked up. But it seemed forced. "Do you really think you'd be up to the task of even witnessing the things that will happen, (Y/N)? They called it Weirdmaggedon for a reason," he said with a slight air of pride. "Not to mention my friends aren't too keen on humans."

"You're keen on me. I'm sure if you tell them that I'm part of this whole thing they won't mind," you persisted.

"Someone's being persistent," Bill chuckled again. "I guess I could. I do still love you, despite the fact you broke our deal."

You looked at the ground as a violent shiver ran down your body. Bill looked at you.

"Oh no..." he muttered under his breath.

Bill floated closer to you, looking you over and examining every part of your body. It was exceedingly uncomfortable. He looked you in the eyes and examined those for a second. "Maybe you could handle it..." he muttered, more to himself than you. His large, singular eye was uncomfortably close to you, and you had to avert your gaze. Bill just tsked and grabbed your chin, forcing you to look back at him. He continued to look into your eyes.

"Th-this some sort of staring contest?" you stammered sarcastically through your rapidly freezing body.

Bill laughed a little, completely unconcerned about the hypothermia creeping its way to your heart. "Not particularly. Just looking to see if you could handle what I'm about to do to you," he responded eerily. Almost instantly you were overwhelmed with an onslaught of particularly... gross thoughts. Bill turned a shade of magenta. "N-not that you doofus! I'm not even human anyway!" he squeaked, unintentionally squeezing your chin rather tightly. You let out a whimper and he let go. "Sorry."

You rubbed your chin, barely withstanding a fit of shivers. "Th-then what are y-you going to d-do?" you asked, looking back at Bill as the magenta aura faded from his body.

"Well, do something I never thought I'd do in my life. Especially toward a human. And yes, I know, it sounds like exactly what you were thinking but get out of your head for a minute and remember I'm not human, usually. I'm going to transfer a bit of my power to you. Pretty much... I'm going to literally become a part of you."

"... Why?" you asked, trying to comprehend what this generally very possessive (quite literally) demon was saying. Transfer some of his powers?

Bill sighed, not his usual "you're so dumb" sigh, but more of a sad sigh. "Well... because... last time I saw someone's eyes glazed over like yours were, they were carving a prophecy into a cave and were dead while doing so," he explained.

"W-what?! Are you saying-"

"Yes. I'm saying you're dead. Your body died about an hour ago. When you fell down the ridge."

"But-"

Bill interrupted you once more. "Look," he said, pointing to the place you had fell.

You looked and found a sight that would have given you a heart attack- had your heart been beating. Your body was lying in the exact spot you had fallen face first. Your hat had fallen off and your hair was sticking out in the direction of the wind, frozen like icicles. It was your body, lying dead and unmoving in the snow. "B-but... i-if I died then.... w-why..." you mumbled.

"Why did I pretend like you hadn't? Why can I see you? Why aren't you in some heaven or hell or purgatory? Why are you still cold?" Bill finished your sentence, listing off the questions in your head. "If I had reacted, you would have freaked out and I wouldn't have you as calm as you are now. As for me seeing you, you're a ghost. Plus it's easier for me to see ghosts than it is for normal humans. Why you're a ghost? Well, since I'm not from this dimension, and your dimension is picky, it doesn't recognize me as someone who has found you. You're a lost soul. Doomed to roam the mountain aimlessly. You also had something to do in life that you couldn't complete, and that was telling me you wanted to join me. So even if the Pines did find your body and give it a proper burial, you'll remain as a ghost." Bill sounded rather emotionless during his explanation. "Being cold... that's my fault. I burn spiritual energy being here. Usually it's just leftovers but I'm literally burning you up. So you're going to start feeling what your body feels. Which is why I had to make sure you could handle the transfer. My fire... Imagine an oil lamp. You're the oil. As soon as I set my hand ablaze, I'm using up even more of your energy. If you don't have much left, I could end up sending you straight to the real afterlife. And there's no way in hell am I going to leave you to the mercy of whatever god you believe in because they all suck."

Your next question, while you were listening, had nothing to do with Bill's explanation. You were too concerned for... well... Bill. "Are you... doing okay...?" you asked, reaching out to him.

Bill instantly flinched away from your hand. "No more touching!" he screamed out of what seemed to be.... fear? "It will take more energy! Just stay there!" Bill did not even acknowledge your question. Instead, he floated further away, muttering to himself.

You were feeling better physically-- or spiritually, to be technical-- but you were really worrying about Bill. He had never really acted like this before.

You found yourself wandering back to your body. You were drawn to it. But you were dead, so how could you still be connected? Was it because you were a lost soul?

You looked at the journal, it had fallen out of your coat and was opened to a strange page. "The Lost Spirit" it read.

You sat down on the snow and began to read.

"The Lost Spirit is the spirit of whom has been influenced directly by Bill Cipher. It is a curse placed upon him and him alone by an ancient people whom modern humans refer to as the Mesopotamian people. The first civilization. The Lost Spirit is different from the normal human spirit. The Lost Spirits, while undoubtedly wronged by being placed in this duty, are to be the torturers for the demon. Forever wandering, we are there to torment Cipher whenever he may come across a new victim. Our mere existence throws off the demon, as we do not follow the rules of the normal ghost. If we complete our goal in death that we had set in life, we must still wander the surface of Earth and will never reach our afterlife until the demon leaves our plane of existence permanently or the demon burns up our spiritual energy.

The demon knows nothing of this curse, and therefore will never understand why all those whom have died by his hand or have died in his witness still persist in this realm."

Your eyes widened in shock. You were a Lost Spirit. You had been influenced by Bill.

"(Y/N)!" Bill screamed in your ear. You jumped and flew up, and probably would have kept flying if Bill had not grabbed your leg and pulled you back down. "What the hell?! I was trying to get your attention and all you were doing was staring at a blank page!"

"I... what?" you mumbled stupidly.

"Ugh, whatever. Hold out your hand," Bill demanded. You did as you were told and held out your hand. Bill hesitated for a moment. "Okay.. just... you're going to get really cold... tell me if you start to feel yourself fading, please. As soon as you feel like you're fading away, tell me and I'll stop, okay?"

You simply nodded. Bill looked at the ground for a long while, thinking about something. Then he looked back up at you and snapped his fingers, the fire sparking and lighting up his hand. Just as Bill had warned, you were instantly freezing. You held your arms close to your chest, shivering.

"Okay, take my hand. We're making a new deal," Bill instructed.

Without hesitating, you took his hand. Curious, you asked, "What is this new deal?"

"I give you some of my power. In return, you stay with me as my... significant other, as you humans call it, for the rest of eternity."

"Fine by me," you said with a smile.

And as soon as this transaction of words was completed, Bill let go of your hand and you were no longer freezing. "Quickly, now! Your heart's going to freeze soon so repossess your body before it does!" Bill yelled over the wind that had picked up.

You nodded again and ran to your body, soon finding yourself in one hell of a frozen meat locker as your heart beat slowly, struggling to catch up to speed. It was odd, though. You didn't quite feel like you belonged. But that feeling slowly went away as you felt something warm overcome your chest. It felt like a fire was burning inside your rib cage, warming your entire body. You felt like a machine as your rhythmic heart beat along throughout your body.

Then you felt something snake around your body. You looked down and found Bill's arms quite literally wrapped around you. It looked as if his arms were nothing but ropes.

"Thank god you're back..." Bill mumbled into the fluff of your jacket. It was almost as if whatever tough guy act Bill had put on was suddenly shut off.

You smiled and awkwardly patted his back. "Thanks for the powers, too. I'm not even cold anymore. Feels like my heart was set on fire," you said, avoiding hitting Bill's top hat with your face.

"It is on fire."

You choked on the air around you, "W-what...?"

Before Bill could explain, you both were interrupted by someone screaming on the top of the ridge.

"BILL CIPHER!" Ford screamed, running down the ridge. He was gripping his journal as his long coat fluttered behind him in the wind. His heavy snow boots kept him from slipping. He looked pissed.

Instantly Bill's arms retracted from you like measuring tape, snapping back to their original length. He glared at Ford as you stepped away from what would surely be a screaming match.

However, when Ford reached you both, he instead turned his gaze toward you, an angry fire blazing in his eyes. "What did you do?! I saw Bill's fire! What other deal did you make with him?! What other fake promise did he make?!" he screamed in your face, completely unhinged.

You, like usual, were unable to respond to this level of pure rage. Whatever words you were going to say were caught in your throat like a lump of burning cinnamon.

"Your anger should have nothing to do with her," Bill growled lowly. Such a low, bass-like growl shook each and every one of your organs, some more than others. "If there's one person to scream at, it's me. Not this poor woman who has been through hell and back thanks to a few choice people including me and you. So shut your trap unless you're going to be screaming at me."

Ford was completely caught off guard. You could practically hear the "HE'S DEFENDING SOMEONE?!" screaming in his head. Ford stepped back from you.

"And as for the 'fake promise' I made her, I can assure you it wasn't fake. All I did was give her some power."

"And what did she have to give you?" Ford questioned, the fact Bill had said "give her some power" not even registering.

"Well... now she's mine. And I'm hers. It's a win win situation for her. She gets some of my powers and she doesn't even have to give up anything. Well... except I guess being able to break up with me."

At this point you saw Ford's face go pale as a dumbfounded expression hit him. He looked completely stupefied. You couldn't help but giggle a little. Bill wrapped an arm around you and pulled you toward him. You had to shift a bit so his corner would not be stabbing into you. 

You looked up toward the ridge again to see the rest of the Pines family running down the ridge as well. Strangely, you couldn't see Jack. You were sure he would have shown up as well, probably trying to convince you to get back together with him, like the sleaze he was. Yet, he wasn't there.

Dipper walked over. "(Y/N)? Are you okay?" he asked, glancing at the snake-like grip Bill had on your waist.

"Yeah, fine," you responded with a reassuring smile.

"I was pretty sure you were going to join him, honestly," Stan said with little remorse. He was probably cranky from the cold.

"She tried. But I wasn't going to anyway. If I really wanted to I would have stolen the quill from her a long time ago. Actually..." Bill said.

It seemed like banter among old friends. However, you could feel the hatred radiating off of each and every one of the Pines family; all directed toward Bill. Even Bill was broiling with hatred under the surface of his casual tone. Everyone was just ignoring their feelings for your sake.

You were shaken from your thoughts by Bill snapping his fingers in front of your face, "Hey! (Y/N)! Where's the quill?" 

"Oh... the quill? I... left it back in the camp... why?" you answered, not paying much attention.

"I need it to make sure the gate can never be opened. I also need your blood for that."

There was a collective "WHAT?!" from the Pines family. You were more shocked into silence. Was he trying to trick you into letting him open it?

"No no no! You see, only your blood on that quill will completely close the gate. That way, even though I've broken the Circle, no one can open up the mountain. If anyone else's blood gets on it, even a little, the whole gate opens and then you're in trouble," Bill explained. He suddenly stopped. "Wait... you said you left it at the camp...?"

You nodded.

"Then do any of you have it?"

Everyone shook their heads.

"Looking for this?" asked a familiar voice. The snake-like length of his s's, the wispy, evil smirk in his voice clear as day. Jack was back.

You turned to look and saw him standing atop the edge of the mountain's crater, holding your quill up in the air. He had a grin on his face. It was even more disturbing than Bill's, and that was saying something for someone who wasn't used to having a mouth. You stepped back.

"I've got to say, (Y/N), you were able to get yourself into a heap of trouble once I left, weren't you?" he said with a sick laugh. "Maybe I should have stayed."

You were turning red with anger, and a sudden red glow beside you indicated Bill's rage. At least Bill agreed with you; the way Jack treated you was absolutely horrid.

"You... never left. I kicked you out," you said quietly, still unable to speak up against Jack for more than a sentence.

"Oh please, I was the one who left you to teach you a lesson. How you can't live without me."

"You-" Bill started, burning with unfathomable hatred. It was actually starting to burn you. "You misogynistic, evil, narcissistic BASTARD! I THOUGHT I WAS BAD. YOU'RE SO MUCH WORSE. YOU THINK YOU'RE SO AMAZING, DO YOU?!"

You could see Jack's confidence falter as Bill continued to scream obscenities in pure, unadulterated rage. You were glad to see him finally get what he deserved, but even you thought it was a bit too much. Bill started to get closer and closer to Jack, his eye inverted. Jack was stepping back, but suddenly stopped and wobbled, having reached the edge of the crater. He was tipping dangerously toward the deadly outer edge of the mountain, where a tumble would surely kill you by snapping every bone in your body and turning your brain into mashed potatoes.

Bill continued inching closer to Jack, his fury melting the snow around him. Jack had gone even paler than his usual self, which was about as white as the snow around him.

You wanted to stop Bill, basic human morals taking over, but you couldn't. Or maybe, you wouldn't. You could feel everyone else's thoughts too, they were in the same predicament. Moral obligation over need for justice. But the deciding factor for everyone was the snow around Bill beginning to boil away into gas. As angry as the Pines have probably made him, you knew he had never been this angry before.

~No One's POV~

Jack looked behind him, fear in his eyes as he saw the rocks slip from under his feet and tumble down the steep decline. One rock slammed against a tree and broke into hundreds of sand-sized pieces.

The heat from the demon was becoming unbearable. It was like standing at the outer edge of a volcano's crater. The glowing red burned Jack's eyes and he could smell burning hair as his scalp began to smoke. Burning flesh created the illusion of a twisted barbeque as the smell wafted around in the wind. Despite being far from the timberline, he could hear the sound of howling coyotes, starved and hungry for their new meal.

He had messed with the wrong demon.

"OH THAT IS RIGHT, STAG. YOU. MESSED. WITH. THE. WRONG. GUY." Bill screeched into his face as he grabbed Jack's arm. The sizzling sound of the flesh made the Pines and (Y/N) gag.

Jack screamed in agony as Bill's grip tightened. Jack's feet slipped and he now found himself dangling off the edge, scared for his life as the wound got deeper and deeper. No blood came out. The molten steel that was Bill's hand was so hot it was cauterizing the wound as it dug deeper. As Bill dug further into the boiling flesh of Jack's arm, Jack realized he only had one option to save his life.

He held up the quill. "I-if you— GAH— k-kill me I-I'll get my b-blood on this!" Jack screamed over the pain and bubbling muscle.

"THEN GIVE IT TO ME!" Bill screeched in return, not going to let this worthless lowlife live.

"O-only if you want to d-destroy the gift from (Y-Y/N)'s father! Sh-she'll never forgive you!" Jack screamed again as Bill tightened his grip even more. He could feel the marrow in his bones boil away.

Bill froze. He would destroy the last thing (Y/N) was given by her father. He would destroy the symbol, her purpose in life. The quill would catch flame in his hand the moment he got near it. Bill glared at the manipulative piece of human feces. He threw Jack onto the ground.

Jack landed with a hard thud onto the ground. He was completely winded and the quill fluttered out of his hand. Jack shakily looked at the remains of his wrist. The skin and muscle had burned away and all that was left was singed bone and a limp hand hanging off; a sick marionette once attached to a string of nerves now nothing but a pathetic sack of meat. The muscles that remained were black, like a badly burnt steak.

"(Y/N)!" he heard Bill yell. "GRAB YOUR QUILL. NOW."

"G-got it...!" (Y/N) stammered. That was supposed to be Jack's control. Not some demon.

Jack quickly grabbed the quill before she could reach it. The quill was his last ditch effort to save his life. However, he heard the sound boiling snow beginning to close in on him.

Searing pain in his foot immediately let Jack know he was never going to live another day. He let go of the quill in the sudden shock and (Y/N) quickly grabbed it, scampering off to the Pines family. She held onto Dipper's jacket sleeve tightly as Jack let out another scream that was quickly snuffed out by the wind as Bill sent him tumbling down the hill. Jack's singed wrist bones snapped off, his hand rolling off in another direction.

~Your POV~

You looked on as Jack's sudden screaming was silenced by the distance between him and everyone else. The last thing you heard was the snapping of bone before there was nothing but the sound of wind and melting rock around Bill.

Slowly, Bill began to turn back to yellow, and the molten rock around him was beginning to cool back to its normal state, despite there being a liquid formation to the rocks. You were still gripping onto Dipper's jacket, and you wanted to let go before Bill flipped his lid, but you couldn't let go. Bill, however, did not seem bothered by it. All of the pent up rage was suddenly gone.

He floated over to you calmly. You were shaking in fear. "(Y/N), would you mind letting go of Pine Tree for just a moment so we can finish this whole thing once and for all?" he asked in an unnaturally calm voice.

You gulped and nodded, slowly letting go of Dipper and walking over to Bill. He held out his hand for the quill, and you complied. Bill grabbed your arm. "This is going to hurt a bit, okay?" Bill said before he used the tip of the quill to cause a long, horizontal scratch down your arm. You hissed in pain as he dabbed the quill into your own blood.

Bill stared at it for a second. Then wrote on his own arm, using your blood as ink, in a language you could only assume to be Latin, "Et det mihi hanc potestatem mutatio." (Let this change grant me power)

The writing absorbed into his arm and Bill looked back at you. "Well, now I can do whatever I want. And we don't even have to start an apocalypse. And that includes this."

The snap of Bill's fingers led to the sudden disappearance of the yellow triangle and then the sudden reappearance of a tall, thin, tan man with yellow blonde hair and yellow, cat-like eyes. He smiled a thin-lipped smile at you and pulled you into his embrace, your face pushing into his bow tie. You let out a muffled cry and Bill loosened his grip slightly. You looked up at him and stared him directly in the eyes. "W-what did you write...? W-what did it do...?" you asked quietly.

Bill chuckled and ran his hand through your hand. "Well, I didn't think the writing part would really work. But now the gate is sealed. The writing was a spell. When you were flipping through that book of yours I caught sight of it and thought I might try it. Now I have all of my powers with none of the consequences!" he explained happily.

The Pines all got super tense.

"Oh pef. You think I turned myself human to turn you all into stone? You can all buzz off," Bill laughed.

There we go! Bit of a different ending from what you were thinking, hm? Thanks so much for reading!