10 Years Ago...

"Don't you want to make Daddy happy, Cassy?" Lucifer purred.
Bright blue eyes stared up at cold gray ones. A young Castiel, no more than eight or nine, rubbed sleep from his eyes. He'd come out of his room when he heard soft grunts through the wall. Was someone hurt? He didn't know. Inias would've come in to wish him good night by then.
Castiel hadn't anticipated a naked Lucifer to answer the door when he knocked gingerly. The small boy nodded in response to his brother's question. Of course he wanted to make Inias happy. It was his duty as a son, to please their father. In many ways, Lucifer was the person Cas wanted to be like. He wanted the proud looks and vocal encouragements. He wanted Inias to love him as well.
"Then do what I do little brother." Lucifer smirked, taking the frightened boy's hand.
Lucifer pushed Castiel to his knees, pressing his foot behind his thighs to keep him from sitting. The elder boy chuckled at his younger brother's unquestioning nature. What he would learn. Stepping away, Luce ruffled his unruly tresses, clearing his throat before the real fun began.
"There are rules Cassy. You can't tell anyone, or Daddy won't be happy. He'll hate you. Don't speak unless spoken to, and keep your eyes down unless he tells you to look up. Answer with yes sir, and no sir, and you always like what he does. You never dislike any affection daddy gives you. It makes him happy when you're an obedient little boy." Castiel nodded. With the rules in place, Lucifer stepped away, turning on three tripod cameras before sitting in the shadows.
Inias approached his youngest son, an unreadable expression plastered on his face. He was a quick learner, Inias would give him that. His eyes never left the spot on the carpet. "Look at me, boy."
Castiel quickly turned his eyes up to his father to appease him. He was a big boy like Lucifer. If his big brother could make their father happy, he could to.
Inias gripped his hair, yanking his head back so strongly the young boy's jaw slacked open in a teary gasp. A dark smile formed on his lips as he stepped from the shadows Lucifer receded in to, fully naked. "Eyes so blue, like your mother." He murmured, staring at his wide eyed boy. "You have to take her place now. You killed her, Castiel. Do you understand me?"
Cas whimpered, squeezing his eyes shut. He meant to follow the rules. He meant to reply 'yes, sir' and bask in the love that would come. He didn't mean to kill her. In his eyes, he was dirty, born in sin and bathed in death. He'd been told many times by his brother, Uriel, that it wasn't his fault. She was sick. He made her sick.
His father growled, yanking once more. "Answer me, boy. Do you understand?"
Cas attempted to nod frantically, fear shining through his cerulean irises. "Y-Yes, Papa."
Inias bristled. "I like that. Call me that from now on, you hear me?"
"Yes, Papa."
Inias took the opportunity to rub the angry red head of his weeping cock against his cheek. "Now, suck."
What the boy lacked in experience he made up for in Enthusiasm to please his father. With Lucifer's voice from the shadows guiding him, the small boy worked his lips around his father's length. All he couldn't take was wrapped in small hands, rubbing in small circular flicks of his wrist. A steady stream of spit and precome travelled down his chin, pooling between his legs. He couldn't breathe, and his mouth hurt, but Papa said.

Inias growled deep in his throat, holding his sons head still to ram his shaft down his throat. He ignored the strangled coughs and tiny whimpers for release, too involved in chasing his own finish to give a damn about the comfort of his son. With a final thrust, Inias snatched the boy off his dick, hand closing around his throat. "Swallow, boy. It will keep your demons at bay. It may even heal your dark spirit."
Cas wanted nothing more than to spit it out, to crawl back into his bed with his teddy, and curl himself in a ball to sleep. Before he could complete his mental pleadings, he was hauled onto Papa's large bed. Stifling a small whimper of distress, he attempted to make himself tiny in the satin sheets, but Papa was not going to accept that. Large hand stripped away his Marvin the Martian pajamas, while lips ventured across his neck.
When all of his protection from the camera's and his brother's eyes was taken away, Inias grinned. "There. Now, do you want to make me really happy?"
"Yes, Papa."
Inias chuckled darkly. "Good boy. Up on your hands and knees like a bitch in heat, boy."
Castiel flipped as instructed, shivering as the cold touched his back. Fingers trailed down his spine before pulling apart his cheeks. The young boy whimpered as a cold liquid pressed against his sensitive entrance. Fear overpowered the urge to be loved by his father. No one was supposed to touch him there. Uriel said so, and Uriel took him.
Castiel cried out, "Stop it, Daddy. Not there."
Inias growled at his son. He wasn't told to make noise. Pressing two fingers into his hole quickly, he hissed at the boy. "You weren't told to speak, boy. You speak, and it will only hurt worse, now shut up and make Papa happy. LUCIFER! Hold your brother."
Lucifer made his way to the bed, crawling beneath a now sniffling Castiel. Wrapping his arms around his brother's middle, Lucifer hushed him softly. "Shh, you're going to upset him. Don't you want his love, Cassy?"
Castiel nodded weakly, squeezing his eyes shut with his forehead pressed against Lucifer's neck. "H-Hurts, Luce." He mumbled, crying out breathlessly as his father ripped his fingers free, pressing the blunt head of his regrown erection to his underprepped entrance.
Inias clamped down on his hips, yanking him back to bottom out inside of his son. Rutting without giving him the chance to adjust, he pulled out with a loud squelch, forcing his way back in. "Such a good boy. Love you so much, Castiel. Going to get rid of those Demons. Make you a good boy again."
His father set a punishing rhythm, the boy's pleading dying out with quiet gasps and strong clenches at his older brother's sides.

Castiel woke with a strangled scream. He hadn't had a dream like that in weeks, yet now, they'd come back with a vengeance. Stupid Dean and trying to help. Castiel pushed the blankets off, curling in on himself once more. He just wanted him to come back. He wanted him to save him. Dean couldn't save him. He was tainted, and dirty.
Realizing sleep wouldn't come to him, Castiel sat up, pulling out his cellphone. He needed him. Dialing with himself wrapped around a pillow, Cas waited.