A/N: My first full length supernatural story! Yay! I hope you all enjoy. This has been floating around in my head for a long while now and I just wanted to share it with fanfiction. It will be completed as soon as heavenly possible and it will be pretty long I hope and I intend.

Warnings: MalexMale, eventual smut, Destiel, Sabriel, Mpreg, cussing, you know the nine yards. AU because neither Bobby nor Gabriel die and Dean already knows Balthazar.

"Thou shall not fall."

"Thou shall not die."

"Thou shall not fear."

"Thou shall not kill."

Aiden (Cry Little Sister)

Chapter One

The clock could barely tick on the moments the infamous Winchester brothers had spent hunting. With the apocalypse safely averted, the boys were free to hunt in peace per say. Sam had safely made it back from the cage, unharmed and barely shaken. Dean had stopped drinking so much. Cas was alive and well with his mojo fully restored. Everything was as it should be.

So far they'd taken a few creatures here and there, always celebrating with a beer afterwards. Something felt…less satisfying about the whole ordeal though, it felt more like a chore now than helping people.

Dean figured it could be the whiskey talking. He felt a little number lately more than usual. Even when he, Sam, and Bobby were gathered in Bobby's living room drinking imported beer with old Joni Mitchell songs on repeat, a traditional post hunting ritual now that seemed a little more…cold.

Dean had to admit to himself that he indeed did miss having Cas around all the time. The angel had more important matters to attend to up in heaven Dean knew, but he still felt a little empty without his best friend by his side. He figured Cas' older brother Gabriel had to be kept in line by someone and needless to say Cas was probably on Gabriel patrol. It wasn't until night fell that day that Dean would get to see his old friend again.

SPN – SPN – SPN – SPN

The air dropped to a cool temperature as Dean sat in the Impala, door open, and beer in hand stargazing. He sighed looking upwards and closing his eyes for only mere moments. He heard a soft flutter next to him, he looked over disappointed.

"What do you want asshat?" Dean grumbled, drinking his beer.

"Oh Dean is that no way to greet an old comrade," Balthazar asked, looking up at the sky as well. "Just came to check in."

"Yeah well get lost," Dean said. "I'm busy."

"I can see that," Balthazar replied sarcastically. "Want me to alert the papers of your dramatic breakthrough?"

"Why are you really here," Dean bit his tongue trying his best not to punch the sarcastic archangel next to him. "Besides to annoy me…shouldn't you be up there keeping your brothers in line?"

"Pssh them," Balthazar chuckled. "They're fine without me up there dictating their every move, that's really more Cas' job."

Dean tensed at the mention of the name.

"Aw Dean Winchester," Balthazar smirked. "Do you miss Cas your little boyfriend?"

Dean slammed the door to the Impala and walked off towards Bobby's house, kicking gravel in his path. Balthazar disappeared without a trace.

SPN – SPN – SPN – SPN – SPN

Dean tossed and turned in one of Bobby's guest beds. He couldn't tell if it was just because the bedsprings were older than mummification or if he needed to down more whiskey. He aimed for the second one and reached to grab the bottle, he suddenly though felt a rush of wind and a flutter of wings.

"Balthazar I swear to damn god above…" Dean turned on the light and looked over, it wasn't Balthazar but his best friend in a trench coat.

"Cas..?" Dean asked tiredly.

"Hello Dean." Cas nodded.

"Bout time your feathery heavenly ass showed up." Dean grumbled once and again and half awake, he reached for his glass downing some more liquor.

"You're upset," Cas seemed displeased. "I'm sorry Dean."

"Yeah whatever Cas," Dean sighed. "It just would've been nice to hear from yah you know, after the whole apocalypse bullshit I was concerned."

"Everything is in order in heaven as it should be," Cas said. "My brothers and I have been working nonstop or I would've come sooner."

"Yeah well your little buddy Balthazar dropped by," Dean loathed even the name. "To annoy me I suppose, royal pain in the ass he is."

"He can be quite, antagonizing," Cas replied, sitting down on the chair facing Dean's bed. "You look tired Dean."

"Well," Dean smirked and said sort of sarcastically and took another swig before setting the now empty glass down. "It's been a long week Cas."

Cas nodded, seeming unfazed by Dean's sarcasm. Dean figured it had gone over Cas' head. That was what never ceased to amaze Dean about the angel, that he could take Dean's sarcasm and cruel jokes at his expense and never yell, never cry, never get angry even. He'd just nod and stare with his crystal blue eyes, cocking his head like a shy puppy dog wanting a bone just as he was doing now.

"Your body requires rest Dean," Cas gave him an almost parental look. "Your eyes have dark circles underneath them, and you seem almost ashen."

It was true; Dean hadn't even shaved in over a month and was starting to grow a slight beard where his usual stubble was. His eyes had bags upon their bags, and his body seemed thinner. He could even feel the bottom of his ribs now. He had been working nonstop since the end of the world had ceased to pass. He stared back at Cas; his friend did seem genuinely concerned about him.

"So Dr. Phil," Dean chuckled. "Are you here to counsel me all night or are you going to let me sleep?"

"My name is not Phil nor am I a physician of humans," Cas seemed confused but he went with it. "But I'm here to make sure you sleep."

"Well then Sandman lay it on me." Dean laid down and sighed, his pillow suddenly seeming more comfortable though.

"Sleep Dean," Cas willed his friend to sleep, Dean's eyes slowly drooping with each movement of Cas' fingers. "You will thank me tomorrow."

SPN – SPN – SPN – SPN – SPN

The hours marched on and the clock chimed twice. The moonlight casting shadows into the dark room through the curtains. Castiel sat, unaffected by the time, in the old worn out chair Bobby kept for god only knows what reason. He kept his eyes on Dean, who for once slept soundly unlike the previous nights in the past months.

Cas couldn't fathom how one man could hold so much inside him. There were things Dean didn't dare speak of and Cas respected those, but he felt that Dean deserved at outlet other than alcohol and his car. Bobby and Sam were friends sure, but Cas wanted to do more for Dean. He felt almost responsible for the man that lay before him. Protective even, like a mother dog of her pups. Dean's soul wasn't the color Cas so desired it to be. He just wanted Dean happy.

In a rare moment of alone time on earth Cas let his wings spring free, on earth he could control their size so he shrunk them so they were small enough to only engulf around his body and nowhere else. They shone a sleek black color, the color of a fallen angel. They were jagged at the tips, holes in some of the feathers too. He sighed; they weren't pretty like they used to be. He looked over at Dean again and he sighed again.

Unaware to Castiel his wings begun to glow with a white light and it flowed on top of them, the light shone but not to the naked eye. It put the moon to shame.

Dean felt warmth engulf his gut and stomach, he could feel something good deep down, but he thought nothing of it before a slight smile slowly crept across his face in his sleep. Cas' wings stopped glowing and all was calm. The only thing that could be heard was Dean's peaceful breath hitting his pillow and the gentle call of a night bird crying out to the heavens above.

Read and Review

Reviews are love guys.