crossoverfic | On My Shoulder chapter 2/?

Crossover: Buffy the Vampire Slayer/Supernatural
Pairing: Dawn Summers/Castiel for certain, others in the future though not sure which.
Disclaimer:Disclaimer: I do not own Supernatural or Buffy the Vampire Slayer. Supernatural belongs to Eric Kripke and Buffy the Vampire Slayer belongs to Joss Whedon, two people who are far more talented than I am. I'm not making a dime off of this.
Author's Notes: Just to warn you, this will be bloody. There will most likely be smut in future chapters as well. Also this is season six Dawn with Castiel so if that sort of thing isn't your cup of tea, I'd advise not reading it. (But Buffy was around that age when she hooked up with Angel so hey...)
Summary: God is not in Heaven, so he must be in another dimension. Castiel goes on a hunt for the one thing that can break the barriers between worlds but what happens when he finds her? CastielDawn
Disclaimer: I do not own Supernatural or Buffy the Vampire Slayer. Supernatural belongs to Eric Kripke and Buffy the Vampire Slayer belongs to Joss Whedon, two people who are far more talented than I am.

“The Key?”

“Yes, the Key.”

“As in an actual key? Like a car key?”

“Physically, no.”

“Well, what is it physically?”

“I don't know.”

“What do you mean you don't know?!”

The creak of the motel room door opening had both Castiel and Dean looking up to see Sam entering the room, white paper bags in hand. The tall man stopped when he noticed the angel.

“Cas? What's going on?” It was always serious when Castiel paid a visit.

Before the angel could speak, Dean stood and grabbed a bag from his brother's hands, rifling through it. “Dude, please tell me you got some pie.”

Sam's brow scrunched in confusion. “Yeah, apple. One slice for me and three for you.”

“Yeah, well I'm gonna need more for this,” Dean grumbled as he unwrapped his bacon cheeseburger.

Sam's brows shot up. More than three slices?! Okay, this must be huge. He turned an anxious look to the angel. “What's going on?”

“Cas wants us to help him with his God hunt.” Dean answered through a mouth full of bacon burger.

Blinking and scratching the back of his head, Sam gave Castiel a skeptical look. “And how are we going to be able to help with that?”

Castiel explained his reasoning. “God isn't in heaven, so he must be in another plane. Another dimension. Before it would have been a bit difficult for me to breach the gates, but it would have been possible.”

“But...” Sam caught on, “Since you've rebelled they've cut you off from heaven and you can't do that kind of thing anymore.”

Castiel was quiet for a moment before answering, eyes downward. “Precisely.”

Sam looked down, feeling more than a little guilty and didn't notice Dean doing the exact same.

Breaking the tense silence, Castiel continued. “However, there is another way for me get through. The Key.”

Sam blinked in confusion. “The what?”

“That's what I want to know.” Dean spoke up. “What is this thing you're talking about?”

!*!*!*!

Dear diary,

It's been a while since I've written anything thing here. Last time I think was right before I found out I was the mystical glowy Key thingie that would eventually cause my sister's death. I don't know why I'm even bothering. Like there really needs to be a written record of how much my life sucks. First I lost my Mom, and now my sister.

God it's been months and I still can't believe she's gone. Things are so messed up. And yeah, everyone is really nice to me but it's not enough. I miss her. I'd give anything to hear her tell me what an annoying pain I am. I just-

A tear fell from her eyes and onto the paper, smudging the ink and causing her to stop to blot at it before continuing.

I just want her back so badly. And having that robot around that looks like her is not enough. Yeah, the robot's nice... well, programmed to be nice at least. Willow's programmed her to as close to the real Buffy as she could.

Willow and Tara moved in a little while after Buffy died. They're in Mom's room while the robot recharges in Buffy's room. No one knows but at night I go in there and I snuggle with her. I mean, yeah, it's hooked up to wires, cables and her eyes are open the whole time and she never says anything but... it looks like her and while it's not enough it's the best that I can hope for now that she's dead. Most people don't even have that luxury.

I go to her grave everyday now. I stayed there way late tonight and Spike found me, brought me home. He's the main one who spends time with me. It's kind of funny actually, months ago, I would have given anything to have him pay this sort of attention to me. Now, I'd trade it all in a heartbeat to have Buffy back.

More tears fell, smudging the ink and soon she just gave up on journaling. Closing the notebook, Dawn flopped back onto her bed. Grabbing the stuffed frog next to her, she pressed it to her face and screamed as loud as she could, its cotton filled body muffling her pained cries to the rest of sleeping household.

!*!*!*!

“Okay, so... you're telling me that this Key thing is a green energy ball that can break down the fabric of reality?”

Dean ran a hand through his hair in disbelief, trying to take it in but having trouble. He glanced over at his brother to see his reaction. It seemed Sam was taking it a little better than Dean.

“It's not that insane, Dean.” Sam said and Dean looked at him like he just grew girl parts.

“What do you mean it's not that insane?” He demanded and Sam gave a small shrug.

“Well, there are countless lore and theories on alternate dimensions and ways to get into them. I'm actually a little surprised we haven't heard of something like this before.”

“But...” Dean protested. “That's... freaky Sci-Fi crap!”

“Oh and what we deal with is so normal?” Sam countered and Dean gave an accepting half shrug. The younger brother turned back to Castiel. “So... this Key thing? Green energy ball that can crack open dimensions or close them up. Where do you put something like that?”

“For centuries, it was protected by an group of monks deemed trustworthy. The order of Dagon. Very powerful men. They kept it safe, until a demigod came after it.”

“A demigod?” asked Dean.

The angel nodded. “Yes, from a dimension nearly as horrible as Hell. She was nearly as horrible as Lilith. Her name was Glorificous. She ruled there with two others but she grew in power The others became afraid of her and struck first. They expelled her from that realm to this lower plane of existence. And she had stopped at nothing to get the Key so she could return to her realm, exact revenge on those who turned on her and reclaim her seat of power.”

Sam took that in and sat down at the small table in the room. “Okay... as far as most nefarious schemes go... All she wanted to do was go home, leave our world alone and kick the asses of those who sent her here? That's actually not that bad. Why not just let her use it to go home then give it back to the monks?”

“Because, the ritual that she would have used would have opened all of the gates, causing the dimensions to bleed into each other. Everything would have fallen into chaos. Not just this world, but everything and it would not have stopped. That could not be allowed to happen.”

“So... what you're saying is... that there's probably a world with huge dragons that eat babies and while she would've been trying to get home, those things would've came here?” Dean asked and Castiel nodded.

“Yes, which is why the monks did not let her have it. They did everything that they could to keep it from her until one day they used their power to change it into something else.”

“What did they change it into?” Dean asked and Castiel sighed.

“I don't know.”

“What do you mean you don't know?”

“Listen, these monks were extremely powerful and smart. They cloaked their work, even to us. And all of this was happening right around the time we...” Castiel stopped and Dean straightened.

“Let me guess. While they were shaping this thing, you guys were busy springing me from the pit so I wouldn't crack the first seal?”

A sympathetic sigh escaped Castiel and he nodded, meeting Dean's eyes. “Exactly.”

Guilt still heavy on his shoulders, Dean swallowed and nodded, saying nothing only waiting for the angel to continue and ignoring his brother's concerned and understanding look. After all, Sam did break the final seal.

“We did not even know that the Key was changed until a few months ago. It was activated, the walls crumbled down and dimensions bled into each other. Then the gates were closed, from my understanding the demigod is dead and the Key is still out there.”

Sam ran hand through his dark hair, still having trouble grasping all of this. “Okay... If dimensions... bled into each other why didn't we know about it? Or notice something? Don't you think it'd be a little hard to miss a portal cracking open and God knows what popping into the world?”

“Because it all happened in one place. It's like a dam with a leak. It starts off small then grows. If it hadn't have been stopped, the world would have been in total chaos. Creatures unlike anything you have ever seen, things only thought to be in ancient myths, walking the the Earth.

“And you want to turn this thing on again?” Dean asked outraged. “So that crap can actually happen while you're off looking for God?”

“That only happened because the Key's power was not focused. If it were actually focused, a gate between this world and another would be opened, not all of them.”

That calmed Dean down but there was still another problem. “You really want us to go portal hopping with you? Forget it. I'm staying here.”

Castiel sighed. “I don't want you two to come with me, Dean. I only want you to help me find the Key.”

“And then you're going to go off, find God bring Him back here so we can kick the Devil's ass?” Dean barely contained a humorless snort and was about to say something smart assed but the glare Castiel gave him warned him to shut his face.

“One question...” Sam said, sensing the tension and deciding to throw in a diversion.

Castiel turned to him. “Yes?”

“You said that the gates opened, all of them. But then they closed. I thought you said that once they got started they wouldn't stop. What stopped it?”

Castiel shook his head. “I have no idea. My superiors probably knew but even before I rebelled I was on a need to know basis and at the time my most pressing matter was-”

“You had the actual apocalypse to worry about?” Dean finished for him.

Taking a breath through his nose, Castiel turned to both of them.“Will you two help me find the Key? I cannot do this alone.” A little bit of the stoicism slid away allowing the brothers to see how desperate he truly was. “Please.”

Sam and Dean both exchanged looks of apprehension. It was insane but with Lucifer free there really weren't a lot of options.

Well, Dean could say yes to Michael.

The memory of the poor, broken shell flashed through Dean's mind. That poor bastard who invited Raphael in and how having the Archangel ride him had left his body after he vacated.

“Is this what I'm looking at if Michael jumps my bones?” Dean had asked Castiel.

“No, not at all. Michael is much more powerful. It'll be far worse for you.”

This whole thing was insane. Searching for this thing but he would gladly go on a hunt for it before allowing himself to end up like that poor bastard Raphael violated.

With a sigh he met Castiel's eyes with and gave a determined nod. “I'm in.”