I wrote another Destiel story! :D I know I haven't posted anything since the beginning of November, but that was because I was working on my NaNoWriMo story and now that it's finally finished, I can write fanfiction again. I'd love to write some Merthur for Christmas and for Colin's 30th birthday, but that depends on school and how much free time I'll get. Anyway, this is a coda fanfic for 11x09 because Cas wasn't there and he should have been. Enjoy!

Warning: I'm not native speaker, so there might be some mistakes. Also, spoilers.

Disclaimer: I don't own Supernatural.

THE LIGHT OR THE DARKNESS
By Mischel

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The kiss was expected, but somehow he doesn't realize it's actually happening until it lasts for more than a minute already. He immediately steps away from her. "What was that?" He asks, touching his lower lip with his thump.

"The future," Amara answers, her arms still raised in the air from where she held Dean's face. "The inevitable result of our first meeting. What you've been feeling since that moment. What we both felt. That we're bonded." And Dean doesn't want to believe any of that, but deep down, he has a feeling that she knows she's right. "You're the one who set me free."

"No, that was an accident." He argues.

"It was destiny." She laughs softly. "You bore the Mark. I am the original Mark." She reaches to the strap of her dark dress and moves it away, showing Dean a bit of her light skin with the red Mark of Cain next to her shoulder. Dean looks at it and takes a deep breath. "You and I will be together." She insists, but Dean's already shaking his head.

"No." He says. Because it can't be true, can it? He could never be with the Darkness, with her. She was just a girl a few days ago for God's sake. Even though God is nowhere to be found. Maybe that is the reason he's here, with Amara. She wants to get God's and Dean's attention. "No, that's- that's not gonna happen." He finishes and for the first time she looks confused.

"It's so simple, Dean. We will become one." She frowns. "Why wouldn't you want that?" She asks and Dean just keeps staring into her dark eyes, not saying anything. There is a reason. There's always been a reason. Not the obvious one - that she is the Darkness and he has had enough of the Mark already and that she's bad, worse than Lucifer. There is another, completely different reason. And that reason has sky blue eyes and dark messy hair and wears a dirty trench coat. And Dean simply isn't ready to let go of him, even though he's never said anything to let him know. He has a feeling that just like the Darkness, he knows what he feels anyway.

"Amara." Someone calls her name and they both turn to the forest. There are four men standing in suits, angel blades shining in each of their hands. Angels have come and they're not here to talk or make amends with their father's sister. They're here to destroy her and do what they think needs to be done. One of them isn't wearing a suit though. He has a light yellow or light brown trench coat and blue striped tie.

"You're going to surrender to us and to the judgment of heaven." One of them speaks.

"Why ever would I submit to anything of God's creation?" Amara answers and Dean looks at her. This is getting dangerous. "Tell your master to come fetch me himself." She says, mockingly stressing the word fetch.

"All of heaven's on high alert."Another angel answers. "If you resist, each and every angel in the skies will smite you in a single unified blow." He says, but Dean isn't really listening. Castiel is all he can see and hear in that moment and he doesn't look away until Castiel meets his gaze. Dean's sure Cas can see his worried face, but he doesn't say or do anything. Weren't the angels trying to kill him? Didn't he say they hated him? Even Hannah until she changed her mind? Maybe they needed to do this with every angel they could think of, even his Castiel. They needed all the power they could get against the Darkness.

"Not even you could survive it." The first angel says and Dean snaps back into reality and Cas looks away from him.

"Whoa, whoa, whoa, fellas, dial it down a bit, okay?" He says and the Darkness looks at him. He can feel it. "Look, if you take her down, a whole bunch of people are gonna die."

"We're at the point where sacrifice is inevitable." The angel answers and Dean looks back at Amara. He can feel she's gonna do something and when the first angel tightens his grip on the blade and marches forward, he knows for sure.

"Amara, no!" He yells, but it's too late. She raises her arm and points at the angel and he starts shaking. There's light in his eyes and mouth, just like Dean's seen it when some angel died many times before. He keeps shaking and he kneels on the ground, his head looking up to the sky. The light grows and he screams until it stops and he falls to the ground with a thud, dead.

The other angels are standing there in shock, until the second one decides to try the same stupid thing. He looks at his dead friend and in the next second he's already going in Amara's direction, but none of this really matters. Not to the Darkness. She raises her hand again and he stops moving, bowed as if he wanted to throw up. As Amara moves her hand up, the angel's hand with the blade runs through his head and after another white light, he's dead too.

It's all happening so fast that Dean can't even react properly. "Amara," he says, but she ignores him. "Amara stop!" He yells, but it's too late. The third angel is already dead, vanishing in a glowing cloud of dust in the air, right next to Castiel. "No!" Dean yells and runs to his friend when he sees Amara is preparing to kill him too.

That finally gets her attention and she puts her arm down, looking at Dean. She's confused, Dean can see it and feel it too, but he doesn't care. If anyone wants to hurt Cas, they're playing with fire. Dean's killed before and he'll do it again without the slightest hesitation. They've just got Cas back dammit, Dean isn't even sure he's properly healed yet.

"Dean, what are you doing?" He hears her ask and Castiel steps from behind him, so he can see the Darkness too. Dean looks at him and Cas looks back, just as confused as Amara. Why can't he understand?

"You're not gonna kill him." Dean turns back to Amara. "Only over my dead body." He adds and he knows she doesn't want to kill him. Maybe she can't, just like he can't kill her. It's won't or can't.

"What?" She laughs softly and steps closer. Dean takes a step back and grabs Castiel's trench coat. He has to know he's still there, alive. "Why, he's just another angel." She says. "The more I kill, the better chance my brother will notice me, I told you that."

"Yeah, well, not with Cas." He answers. Or anybody, she has to stop the killing.

"Oh, so you know him." Her smile wavers a bit as she looks down and sees Dean's hand, clutching to Castiel's coat. She looks back into his eyes. "A good friend, I guess."

"More than good." Dean answers. "He's family and you ain't gonna hurt him."

"Dean, I have to try to stop her." Castiel takes his hand and moves it away from his coat. Dean turns his head and looks at him.

"No way, man, I'm not gonna let you do that." He says. "It's suicide, you know that."

"You can't tell me what to do."

"I can try." Dean says, a sad smile on his face. He knows Amara's watching and that she can hear every word they say, but he doesn't care. "I can't lose you man, I told you that." He adds. "I need you... Sam needs you too. And not for your power, we need you for being you."

There's a tiny smile in the corner of Castiel's mouth, until it disappears and he groans with pain, falling to the ground. Dean's eyes widen and he immediately kneels beside his friend, holding his head just like he did when he got rid of the spell.

"No!" Dean yells and looks at Amara."You can't do that! Stop!"

But she just smiles. "Now that I know he's your friend, maybe I can use him to get you to understand me. You and I are supposed to be together, Dean. You can't outrun your own destiny."

"I could once, I can do it again!" He yells and looks back at Cas. There's blood in his mouth and on his stomach, his white shirt already red. Dean closes his eyes for a second, trying not to cry. When he opens them again, Castiel is staring up at him, reaching to hold his hand and Dean doesn't care he's not alone, he grabs it and squeezes. "I'm gonna fix you man, don't you worry." He attempts to smile and fails horribly. Amara is killing Castiel slowly, not like the other angels.

"I'm better, Dean." She says as she sees their hands and realizes something Dean didn't admit to anyone yet. "You and him, you aren't forever. But I can make you immortal, we can be together forever, we're bound." She says again, but Dean doesn't care.

"Just fix him, please." He begs. He doesn't see her frown and he doesn't know that while she is his weakness, he is her weakness too.

"He can't give you what I can." She tries one last time, just as the clouds start gathering in the sky. The angels are already working on smiting her and it looks really impressive.

"I don't care!" Dean snaps at her. "He'll always be better than you, and I will always choose him over you. You can't change that!" He says and Amara looks up. He follows her gaze and his eyes widen. It's coming and it's going to be huge. They will smite her, but she doesn't look very bothered by that.

He looks down and suddenly she's kneeling right next to him. She looks into his eyes and once again, Dean isn't able to look away. She places her hand on his cheek and smiles, he just keeps staring at her. "I know you'll choose me in the end, don't worry." She says and touches Castiel's forehead with one finger. Dean looks down to see that Castiel's healed, but just when he looks back up, he's back in the park again, sitting on a bench with the angel in his arms.

I know this is not perfect, but I just really really wanted Cas to be in this episode and I thought it'd be interesting if he was one of the angels who tried to attack Amara. Well, I might continue this if you want me to... or make it a little season 11 coda series because I don't doubt I'll want to write something for season 11 again. Anyway, that's why I leave this as in-progress fanfic, I hope you enjoyed :)