Soo Guest gave me a brilliant idea lol, I'm already writing it in too. I mean, I've already written ahead several chapters, only pacing myself with publishing because not many people are reading this haha. Anyway, if y'all have any other ideas for me, let me know~

Episodes in this chapter: "Sympathy for the Devil" and "The End"

I do not own Supernatural

Dean pulled Sam up, urging her to come with him. "Let's go, come on!"

However, before they could reach the door, it slammed shut. They rattle and pound at the doors, but to no avail.

Then, the next thing they knew there was a high-pitched ringing sound, and everything became too bright. The next thing they knew, they were in an airplane flying over Ilchester, (where they just were). The white light shot up ahead of them, shaking the plane.

Eventually they pull off an emergency landing, and Sam and Dean find a rental car.

This is it. This was the apocalypse that they had struggled to prevent, to no avail.

Sam flipped through the stations to find some music, but it was all red alert news about one apocalyptic event or another. She eventually shut off the radio, frustrated and tired.

He knew that she thought it was her fault this all started. To be honest, it kind of was. But he couldn't just say that, he was a good big brother. What she needed was support and trust. "Dean, look-"

"It's okay. We just got to keep our heads down and hash this out, all right?"

They decided Castiel was their best bet if they were going to figure anything out. Castiel, of course, and Chuck.

So, they headed to Chuck's worn down place first. Sam was greeted by a plunger to the head. He looked cautious, and slightly frayed of her. Dean stood protectively beside her, ready for another plunger attack. "So… you're ok?" He asked. "My last vision… you went full on Vader." Sam cringed, yet he still continued, not noticing her discomfort. "Your body temperature was one-fifty. Your heart rate was two hundred. Your eyes were black."

"Your eyes went black?" Dean asked, alarmed.

Sam looked over her shoulder to Dean, her eyes wide. "I didn't know."

"Where's Cas?" Dean demanded.

Chuck told them what happened to Castiel, and soon after the archangel Zachariah popped into the room, commanding that Dean come with them. Dean, however, was able to chase him away with a trick he had learned from Castiel. A simple sigil written in blood was all he needed, and it flashed any angel in the vicinity away.

After that hubbub, they left to find a nearby motel and booked the cheapest room. Sam had left to get something, and came back not long after. Dean was busy loading his gun as Sam walked back through the door. "Hey." Dean greeted.

"Hey." She closed the door behind her, reached into a pocket, and tossed the bag to Dean. Dean caught it expertly and examined it.

"What is it?"

"Hex bag. No way the angels will find us with those. Demons, either, for that matter." She stated authoritatively.

"Where'd you get it?" Dean questioned further. Surely, it couldn't have been easy getting one of these. Especially if she'd been in contact with a witch behind his back...

"I made it." She said, somewhat proud.

"How?"

This made her pause. Dean noticed her hesitation and looked up from the bag. "I… I learned it from Ruben." She said sheepishly.

Ruben, demon blood. That was going to be a never ending issue for them. He approached Sam, who was sitting on the edge of her bed by now. "Speaking of. How you doing? Are you jonesing for another hitch of SOB blood or what?"

Sam looked down to her hands. "I-it's weird. Uh, tell you the truth, I'm fine. No shakes, no fever. It's like whoever...put me on that plane cleaned me right up."

"Supernatural methadone."

"Yeah, I guess." Sam paused, and took in a breath. Then, he knew that she was going to make one of her sob-story speeches. "Dean-"

"Samantha." He turned from her. It would be easier to just leave it all alone. "It's ok. You don't have to say anything."

"Just let me, ok? It'll make me feel better." She said stubbornly. Dean sighed, but continued loading his gun. "I know you'll brush this off as just a mess to clean up later… but I gotta say something. Do… do you still think I'm a monster, especially for starting the apocalypse?"

He stopped abruptly, and immediately knelt down to level with her, putting his gun to the side. "No, no. Of course not. I just didn't know what I was saying back there, I was only desperate. Desperate to win you back. It means nothing now." He spoke as calmly as he could, afraid his sister was going to break.

She was speaking quietly. "In the panic room, before our fight, I saw things. I saw you. You were calling me monster back then, that I wasn't even your sister. It hurt, Dean. It hurt so much. When… when the real you said it, I couldn't-"

Her voice wavered as she choked back a sob. Dean engulfed her in a hug. "Look, everything's going to be fine now. All that is behind us, I… If it makes you feel any better, I promise I won't call you that ever again." She nodded, and he left the hug, leaving a hand on her shoulder. "Now, let's find the Devil."

Dean looked to the TV for news on the apocalypse, while Sam stared at their father's journal.

Not soon after, a woman - Becky, she introduced herself - relayed a message to the Winchesters from Chuck, saying he was being watched by the angels, so he was trying to lay low for awhile. The message was that The michael sword is on earth. The angels lost it. In a castle, on a hill made of forty-two dogs.

They decided to meet up with Bobby, to see if he could figure out anything, and once the met up, they figured they could dig into some information on the archangel Michael. However, Bobby noticed Sam's down mood, and asked, "Kid? What's wrong?"

"No… actually… this is my fault. All my fault. I'm sorry." Sam admitted.

Dean sighed. Not this again. "Sam…"

"Lilith did not break the final seal. Lilith was the final seal."

"Sam, stop it." Dean tried. However, he knew it was too late.

"I killed her, and I set Lucifer free."

Bobby blinked."You what?"

Sam shook. "You guys warned me about Ruben, the demon blood, but I didn't listen. I brought this on."

Dean stared at his hands as Bobby approached Sam. "You're damn right you didn't listen. You were reckless and selfish and arrogant."

"I'm sorry." Sam said, deflating.

"Oh, yeah? You're sorry you started Armageddon? This kind of thing don't get forgiven, girl. If, by some miracle, we pull this off...I want you to lose my number. You understand me?"

Dean inhaled sharply, but didn't say anything. Sam made an excuse to do research somewhere else, which he didn't blame her for. He didn't attempt to stop her retreating form, and just stood on his own.

Dean researched with Bobby quietly, silently fuming at him for yelling at his sister like that. Seriously, it was a bit harsh.

Eventually, Bobby decided to speak up. "I never would have guessed your daddy was right."

"About what?"

"About your sister." Dean looked up. What possibly could their father be right about? Especially if it was concerning Sam, he was usually wrong. "What John said- you save Samantha or kill her. Maybe…"

"Maybe what?"

"Maybe you shouldn't have tried so hard to save her."

Why would Bobby even say such a thing? "Bobby." Save Samantha or kill her? Obviously he would choose the latter.

"She ended the world, Dean. And you and I weren't strong enough to help her proper. That's on us. I'm just saying, your dad was right."

No… no, he wasn't right about that. But… just thinking about his dad made him think about Chuck's message. Somehow, he connected the two, and found one of his old storage cards for Castle storage. 42. Rover hill.

Their conversation about Sam had been put to the side for now, and Dean was glad about that. He was honestly a bit conflicted…. He knew that Bobby was partly right.

However, Bobby's eyes flashed black, and they were ganked by demons. Surprisingly an old enemy, named Meg, was leading them. Sam and Dean fought back, and the demons retreated. However, one of the demons stabbed Bobby before retreating the vessel.

They rushed the man to the nearest hospital. However, Dean knew that Bobby would understand that they had bigger problems, and urged Sam to come with him to get the sword.

Dean understood then why Bobby said such mean things to her earlier, he was simply possessed. It was the demon talking.

When they made it to the storage house, Zachariah appeared and told Dean that he was the Michael sword. He couldn't believe such a thing. "I'm a vessel?" He asked.

"You're the vessel, Michael's vessel." Zachariah replied.

Dean didn't understand. "How? Why me?"

Zachariah smiled. "Because you're chosen! It's a great honor, Dean."

Dean stared. "Oh, yeah. Life as an angel's condom. That's real fun." He heard Sam snort, which made him grin. "Thanks, but I'll pass."

"Joking. Always joking. Well, no more jokes." Zachariah raised his fingers like a gun, and pointed them to Dean. He then slowly shifted it to Sam. "Bang."

Sam's eyes widened, and a loud crunch echoed in the storage room. She crumpled to the ground, and Dean turned to her in alarm. "God!" She cried out.

Dean turned back to Zachariah. "You son of a bitch!" He was going to make the SOB pay for what he did to his sister. She didn't do anything wrong, dammit.

"Keep mouthing off, I'll break more than her legs. I am completely and utterly through screwing around. The war has begun. We don't have our general. That's bad. Now, Michael is going to take his vessel and lead the final charge against the adversary. You understand me?"

"How many humans die in the crossfire, huh? A million? Five, ten?" Dean asked, not believing any of this.

"Probably more. If Lucifer goes unchecked, you know how many die? All of them. He'll roast the planet alive."

"There's a reason you're telling me this instead of just nabbing me. You need my consent. Michael needs my say-so to ride around in my skin." Dean realized.

"Unfortunately, yes." The angel replied. Sam groaned in pain, and Dean wished he could do something to help her somehow, but there was no way he was going to say 'yes'. So, he was useless.

"Well, there's got to be another way."

"There is no other way. There must be a battle. Michael must defeat the serpent. It is written."

"Yeah, maybe. But, on the other hand... Eat me. The answer's no."

"Okay. How about this? Your friend Bobby-we know he's gravely injured. Say yes, and we'll heal him. Say no, he'll never walk again."

Sam looked up to Dean, and he knew that. Even after what he said, she still cared for him. "No." He said anyway.

"Then how about we heal you from...stage-four stomach cancer?"

Dean's eyes widened, and he felt pain. He doubled over, coughing up blood into his hand. "No…" He still refused, slightly blinded from the churning of his stomach.

Zachariah hummed. "Then let's get really creative. Let's see how… Samantha does without her lungs."

Alarmed, Dean turned to look at Sam, who started gasping for breath and clutching at her throat. "D-Dean…" She began to lose color, reaching out for him.

Dean's face fell. Sam was going to end up dying, and he couldn't do anything. Zachariah grinned. "Are we having fun yet? You're going to say yes, Dean."

"Just kill us." Dean spat.

"Kill you? Oh no, I'm just getting started."

Suddenly, Castiel appeared in a bright light. He killed one of Zachariah's henchmen, and fought the other angel, quickly dispatching him. During this time, Dean made his way to Sam, watching the onslaught by her side as she tried to gasp for breath.

Castiel scared Zachariah away. Once he was gone, Sam took in a gasp of breath. Dean realized that she had her lungs back, and with a sigh of relief realized his stomach cancer was gone as well. Dean helped her up. "You two need to be more careful." Castiel stated, his gaze lingering on Sam.

Dean wasn't sure what that was supposed to mean, but his sister blushed quietly under the angel's gaze, and he had a slight understanding of what was going on. Not that he really approved of it, after all.

However he soon left them, planting a sigil on their ribcages, so that angels couldn't find them as easily as Zachariah just did. A brand, if you might. However, Dean was still unsure of how Castiel had come back to life.

They made their way back to the hospital to check on Bobby. Turns out, he may never walk again.

They chatted about defeating Lucifer. "Listen, you stay on the mend." Dean said, patting Bobby's shoulder, and headed for the door. Sam followed behind, but they both stopped when the old man called for Sam.

"I was awake. I know what I said back there. I just want you to know that...that was the demon talking. I ain't cutting you out, girl. Not ever."

After a long pause, Sam sighed in relief. "Thanks Bobby."

Dean smiled.

"You're welcome. I deserve a damn medal for this, but… you're welcome."

Sam and Dean leave the hospital, and make their way to the car. "You know, I was thinking, Dean-maybe we could go after the Colt." Sam tried.

"Why? What difference would that make?"

"Well, we could use it on Lucifer. I mean, you just said back there-"

"I just said a bunch of crap for Bobby's benefit." It was true, Bobby was getting a little too pessimistic back there. All he was trying to do was lift the mood a little.

Dean sighed, and stopped in the middle of the road. Sam stopped too, and turned to stare at him. "I mean, I'll fight. I'll fight till the last man, but let's at least be honest. I mean, we don't stand a snowball's chance, and you know that. I mean, hell, you of all people know that."

Sam looked hurt. "Dean… is there something you want to say to me?"

Dean took a deep breath. He couldn't, he had to stay strong for his sister.

Nope. He caved. "I tried, Sammy. I mean, I really tried. But I just can't keep pretending that everything's all right. Because it's not. And it's never going to be. You chose a demon over your own brother-" He struggled for his words. "I'm just-I'm having a hard time forgiving and forgetting here. You know?"

It really didn't have to do with the fact that he called her and thought of her as a monster. That wasn't the problem anymore.

"What can I do?" Sam asked quietly.

"Honestly? Nothing."

Sam looked down. "I just don't...I don't think that we can ever be what we were. You know? I just don't think I can trust you."

Sam looked back up in surprise.

Don't get him wrong: he still loved his little sister, he would do anything to protect her. However, he didn't trust her enough to think she would do the same.

The two of them decided it was best to go their own way, and they departed after one final hug and wish of good luck. They figured it was best to work alone than together, since the only thing they seemed to do was get in each other's ways.

Dean decided he needed to take a breather in a cheap motel, and that was when Castiel decided to call him. This amused him, because… calling an angel on the cellphone? Anyway, he called about the colt, and he seemed to find information on it. "Ok, so, you'll just pop in tomorrow morning." Dean said.

"Yes, I'll just-"

He hung up, and sunk into his bed, almost immediately going to sleep. At least, until his phone rang again. He grumbled and found his way through the dark, eventually finding his phone on the bedside table. "Dangit, Cas, I need to sleep!"

"Dean, it's me."

The soft voice of his sister announced on the other end. He straightened. It really must be something if she was calling him. "Sam? It's a quarter past four."

"This is important."

"Ok. What is it?"

Dean stood and decided he wasn't really going to get much sleep, so he went for a beer in the fridge. "Lucifer came to me." She explained what had happened while he took a drink.

"So you're his vessel huh? Lucifer's wearing you to prom?"

"That's what he said."

Well, this just plain sucks. "Just when you thought you were out, they pull you back in, huh, Sammy?"

A pause. "That's it? That's your response?"

It was only like, four in the morning. What else was she going to expect? "What are you looking for?"

"I don't know. A-a little panic, maybe?"

She sounded pretty scared, Dean decided. He rubbed his eyes. "I guess I'm a little numb to the earth-shattering revelations at this point." Plus it was too early, so his mind was a little muddled to deal with that.

"What are we going to do about it?"

"What are you going to do about it?" Dean replied.

"I want back in, for starters." She went right to it.

"Sam-"

"I mean it. I am sick of being a puppet to these sons of bitches. I'm gonna hunt him down, Dean."

Dean sighed. This was the sort of thing that tore them apart. Revenge was what started the apocalypse. "Oh, so, we're back to revenge, then, are we? Yeah, 'cause that worked out so well last time."

"Not revenge. Redemption."

"So, what? You just come right back in and we're the dynamic duo again?"

She inhaled. "Look, Dean, I can do this, I can. I'm gonna prove it to you."

Dean was just tired. "Look, Sam-it doesn't matter-whatever we do. I mean, it turns out that you and me, we're the, uh, the fire and the oil of the Armageddon. You know, on that basis alone, we should just pick a hemisphere. Stay away from each other for good." Sure, he loved his sister, but there was a point where he just had enough of her.

Her voice wavered. "Dean, it does not have to be like this. We can fight it."

"Yeah, you're right. We can. But not together. We're not stronger when we're together, Sam. I think we're weaker. Because whatever we have between us-love, family, whatever it is-they are always gonna use it against us. And you know that. Yeah, we're better off apart. We got a better chance of dodging Lucifer and Michael and this whole damn thing, if we just go our own ways." It had been like this their entire lives. They'd be safer without each other.

"Dean, don't do this."

"Bye, Samantha."

With that, he hung up. He felt as if his heart got ripped out of his chest, but it really was better this way. At least, that's what he told himself.

The next morning, he found himself in a bit of a predicament. First off, everywhere he saw there was devastation. The croatoan virus spread, and he couldn't find anyone he recognized. At one point, Zachariah came to explain the mess he put Dean in, but made no move to pull him back out.

So, Dean found out where Bobby and Castiel resided, and decided to head over to the refugee camp. When he made it there, however, he wasn't entirely welcome. The first greeting he received was a punch to the face, therefore knocking him out.

He awoke tied up in an empty cabin, being kept hostage by someone who looked exactly like him. However, he seemed much older, with more stress wrinkles and dark circles. Dean managed to convince future him who he was. "So, what, Zach zapped you up here to see how bad it gets?"

"I guess. Croatoan virus? That's their endgame?"

Future him nodded. "It's efficient, it's incurable, and it's scary as hell. Turns people into monsters. Started hitting the major cities about two years ago. World really went in the crapper after that."

"What about Samantha?"

Surely she's still all right after all this? Unfortunately for him, his future self goes very still. "Heavyweight showdown in Detroit. From what I understand, Sam didn't make it."

Dean stared. "You weren't with her?" He knew if there was any sort of fight, he'd go right to her side so she wouldn't face it off alone.

"No. Me and Sam, we haven't talked in- hell, five years."

Dean's eyes widened. He couldn't believe it. "We never tried to find her?"

"We had other people to worry about."

Who? Who could possibly be more important than their little sister?

However, it was after that that his future self decided to leave on a mission. Dean easily escaped, and ran into a few mishaps. Mostly just getting blamed for something he hasn't even done yet. He found Chuck, who surely pointed the way to Castiel.

Dean found Castiel leading some yoga class, which was something he never expected the angel would do. Luckily, Castiel immediately realized that he wasn't the current Dean Winchester that lead the camp.

After getting into some trouble with his future self, (and watching him murder someone in cold blood, who actually turned out to be a croatoan) his future self showed Dean the colt, claiming that he was going to kill the devil with it.

Back in headquarters, they formulated a plan. They even decided that Dean should come along. "Why are you taking me?" He questioned.

"Relax, you'll be fine. Zach's looking after you, right?" His future self replied.

Dean shook his head. "No, that's not what I mean. I want to know what's going on."

"Yeah, ok. You're coming because I want you to see something." Future him said grimly. "I want you to see our sister."

"Sam? I thought she was dead." Dean said, surprised.

"Sam didn't die in Detroit. She said 'yes'."

"'Yes'?" Dean asked. Yes? What did that mean? She couldn't have… "Wait, you mean-"

"That's right. The big 'yes'. Lucifer's wearing her to prom."

Dean sighed, his heart dropping. He felt terrible especially knowing that he was the culprit. "Why would she do that?" However, he already had the answer. He just didn't want to think about it.

"Wish I knew. But now we don't have a choice. It's in her, and it's not getting out. And we've got to kill her, Dean. And you need to see it-the whole damn thing, how bad it gets-so you can do it different." His voice never wavered, even though Dean knew how much it must hurt. His future self must've spent the whole five years preparing mentally for this.

"What do you mean?"

His future self went to explaining how saying 'yes' to Michael could've helped their situation, but Dean didn't see the revelation in that. There needs to be a different solution to their never ending problem.

Soon after, they prepared to leave. Chuck gave advice to hoard toilet paper, and Dean learned why Castiel was doing all sorts of drugs, and love-guru type stuff. He had turned mortal, and he supposed it had something to do with the angels leaving.

When they made it to the demon hot spot, Dean figured out the trap. His future self was going to send his friends to their deaths as a diversion, so he can kill the devil. So he can kill Samantha. However, he had a late reaction and only ended up knocked out, whereas future him escaped.

When he awoke, he hurried the back of the house where he supposed his future self would be. When he found him, however, he was on the ground with his neck bent awkwardly.

Dean looked up to find his sister smiling grimly at him. His breath hitched. She wore a long, white dress, as if it was a wedding. She stood in heels, he could tell, because she was at least an inch above him. Her hair dressed in curls. She was beautiful.

Yet… it wasn't her. It was Lucifer.

"Oh. Hello, Dean." She grinned. "Aren't you a surprise."

Thunder cracked and lightning bellowed, and suddenly Lucifer was behind Dean.

"You've come a long way to see this, haven't you, Dean?"

Dean gulped, but stood strong. He wondered if she was still awake down there. "Well, go ahead. Kill me."

"Kill you?" She looked at the corpse of his future self. "Isn't that a little… redundant?" Dean gritted his teeth, and looked to the floor. It hurt him to see his sister like this, especially knowing how he could've done differently to change this outcome. "I'm sorry. It must be painful, speaking to me in this- shape. But it had to be your sister. It had to be."

She reached for his shoulder, but he moved back.

"You don't have to be afraid of me, Dean. What do you think I'm going to do?"

Dean looked up to Lucifer, sending the angel a glare. "I don't know. Maybe deep-fry the planet?"

Lucifer examined a rose, however, he turned away. "Why? Why would I want to destroy this stunning thing? Beautiful in a trillion different ways. The last perfect handiwork of God."

Dean stared at him, not saying a word. "You ever hear the story of how I fell from grace?"

Lucifer went into his explanation, about how he loved his father more than how he loved humans. Thus, he was cast down. To which Dean responded plainly, saying that he didn't really give a damn.

Lucifer smiled. "I like you, Dean. I get what the other angels see in you. Goodbye. We'll meet again soon." He turned, the dress he is wearing whooshing around him. "You know, I let dear Samantha choose this dress. It is rather stunning, isn't it?"

"You'd better kill me now!"

Lucifer turned back. "Pardon?"

"You better kill me now. Or I swear, I will find a way to kill you. And I won't stop."

"I know you won't. I know you won't say yes to Michael, either. And I know you won't kill Samantha. Whatever you do, you will always end up here. Whatever choices you make, whatever details you alter, we will always end up-here. I win. So, I win."

"You're wrong."

"See you in five years, Dean."

Suddenly, the area around him disappeared and he was back in the motel room with Zachariah. Zachariah, of course, tried to get him to say 'yes' to which he refused until Castiel came to save him again.

Dean waited, leaning against his Impala until another car rolled up. Sam got out, and approached him warily. She seemed still shaken up from their conversation, but Dean was glad to see that she was still herself, and that she hadn't said 'yes'. Well, yet.

"Samantha." He said, taking out Ruben's knife. He handed it to her. "If you're serious and you want back in… you should take this, I bet you're rusty." Even as she takes the knife, she still can't meet his eyes. He sighed. "Look, uh… I'm sorry. I don't know… I'm… whatever I need to be. But I was wrong."

Sam looked back up to him, surprised. "What changed your mind?"

"Long story. The point is...maybe we are each other's Achilles heel. Maybe they'll find a way to use us against each other, I don't know. I just know we're all we've got. More than that. We keep each other human."

She grinned. "Thank you, really. Thank you. I-I won't let you down."

"Oh, I know it." Dean said, ruffling her hair. "I mean, you are the second-best hunter in the world."

"Dean, please." She giggled, slapping his hand away and moving to fix her hair. "So, what do we do now?"

"We make our own future."

"Guess we have no choice."