Castiel felt the dull pain in his ass as he sat down. It had been three days since Sam had come to him, and if it wasn't for Anna's remarkable recovery, Castiel could probably had convinced himself it was all a dream. But Anna was better, and Castiel definitely wasn't a virgin so he was unable to deny that Sam existed and had been all over him.

"Uh, you needed to talk to me?" he asked, looking at his parents seated opposite from him.

His mother smiled, it looking unnatural on her usually stern face. "Yes, Cassie," she said kindly, "we have some concerns."

Castiel had to stop himself from rolling his eyes, "Okay?"

"Why did you refuse to go to church?" his father demanded, "You're sister had just recovered from a grave illness at God's will and you will not send him your thanks in prayer."

Maybe if he told them they would see the irony in thanking God for a demon's work. "I was just feeling a little tired," Castiel excused, "I'm sure God will forgive me."

"That's not all," his mother defended with a frown, "we found something…"

Castiel was filled with a sudden sense of dread and the knowledge that he did not know where that book was. "What did you find?" he asked nervously.

His father reached back and pulled out a familiar book, dark blue and heavy with ripped pages, and slammed it down on the coffee table in front of them. "Devil worship," he accused loudly.

Castiel stared angrily at the book, logically he should have thrown it away as soon as he was done, but what if he needed to get in touch with Sam? Though if Sam never came back, Castiel would never dare ask why – he was a demon and he didn't need to waste his time with some kid.

His mother spoke quietly, "What is this, Castiel? Why do you wish to anger God this way?"

Castiel shook his head, "No, mum, it wasn't that… I was just curious, but I'm not anymore I swear."

"There are many confronting images in this book," his father said between gritted teeth, opening the old pages to the one Castiel had used to summon Sam, "foul demons from the depths of hell and… explicit images of women. If it were the women you were interested in there are more common ways of exploring that."

Castiel blushed deeply, remembering all too suddenly the way Sam's hands felt on his body. "Yes, I know. I'm sorry father…"

"Besides, these things don't work," his mother attempted to laugh, quickly trying to make the situation light-hearted.

His father nodded in agreement, giving a forced smile, before jokingly reciting the passage from the page, "Daemon, esto subjecto voluntati meae."

Castiel gasped and looked at him in shock, before his father could ask him anything the lights blew out. Castiel's mother gave a short squeal, clutching to her husband. In a second the lights were repaired and Sam was standing before them. He looked different to the last time, Castiel noticed quickly, his eyes were inky black and he had a long devil's tail winding down his leg.

"Hi," he said cheerfully, "You called?"

Castiel looked at him hopelessly, silently begging him not to say anything.

"You… demon. You're a demon!" his father screeched indignantly, standing up to confront him.

Sam smiled, "Well, yeah. What did you expect when you summoned me? Are you a little slow in the head or something?"

"Be gone from this realm, foul creature, or I will send you into the fiery pits of hell," Castiel's father shouted, pointing at him angrily.

Sam scoffed, "Get off your high-horse, you read the incantation. Maybe I'll just speak to Castiel, hmm? Since conversation is clearly not your strong suit."

"You stay away from my son!"

With a smug smile, Sam reached out and poked Castiel on the nose, "Boop," he laughed.

"Castiel do you know him?" his mother asked in shock.

"No," Castiel insisted quickly.

Sam raised an eyebrow, but didn't deny him, "What makes you ask that, little lady? I was just focusing on the best looking person in the room."

Castiel blushed, earning a frown from his mother.

"So… What do you want?" Sam asked insistently.

Castiel's father perked with interest, "What do you mean?"

"Oh, I offer money, health, love, talent, happiness, bigger dick… anything you want." Sam said casually, sliding in next to Castiel.

"A promotion?" Castiel's father enquired.

"I can make you a billionaire and you want a promotion?" Sam laughed, "Sure, whatever."

"What do you expect in return?" he asked seriously. Castiel tried to shake his head, but Sam placed a hand on his shoulder warningly.

"Your soul," Sam smiled casually, "just eternal damnation in Hell."

"There must be something else!" his father demanded, "Some other form of payment."

"Stop it," his mother hissed, "this is insane."

Sam gave Castiel a knowing glance, "I rarely make exceptions."

"I'll give you him," his father insisted quickly, misinterpreting the glance, "I'll give you Castiel."

Sam frowned, "You… what?"

"He's my son, he belongs to me. I can give him to you," his father continued ignoring shocked looks from around the room.

Castiel felt numb, resisting the urge to cry he moved closer to Sam. "Why would you do that?" he asked his father miserably.

"You wanted devil worship, you can have devil worship," he scowled, then turning to Sam he said, "Will you take him?"

Sam considered for a moment, he was pissed off the Castiel's father showed so little concern for him; that his mother was happy to sit there like a statue and allow her son to be sold as a particularly expensive slave. "You mean it, little human? Do you have any idea the things I could do to him?" Sam sneered while Castiel's father flinched, of course the man had no idea they were all pleasant things.

"I mean it," he promised.

Sam shrugged, "Then I accept," he made sure not to look at Castiel, knowing the poor boy would be heartbroken over how awfully his father was treating him. "I'll take your son, what would you like?"

"Uh, money, lots. Ten billion dollars in my bank account. We have a deal?"

Sam nodded, "We have a deal." He reached forward to shake his hand, not wanting to kiss the repulsive man.

Castiel awoke a few hours later, crying. Sam had carefully wrapped him in his arms, his eyes back to normal and his tail gone, and they were in bed together. "Hey Cas, it's okay," Sam cooed gently, enjoying having the tender human in his grip once again.

"Why did you accept?" Castiel accused angrily.

Sam blinked in surprise, having assumed Castiel's resentment would be directed at his father. "He was willing to sell you," Sam explained smoothly, "any father willing to sell him son is not a good father. I brought you here with me, now you are safe from him."

Castiel sobbed, pushing his face against Sam's chest, "What of Anna? And Hael?"

Sam breathed with relief, glad that Castiel had accepted his reasoning. "I will watch over your sisters," Sam assured softly, not something he had intended on doing, but didn't seem unreasonable, "they will be safe, and so will you."

Castiel gripped him tighter, happy to be assured by his soft words. "You accepted," he mumbled softly, "you want me?"

"I do," Sam chuckled and Castiel felt the vibration through his chest, "I like you."

Castiel slumped, resting against Sam's strong body, "What will you even do with me?"

"I want you to be my consort," Sam whispered gently, kissing his hair.

"Consort?"

"Didn't I mention? They call me the Prince of Darkness, Prince of Hell, Satan's Heir – all very royal, I imagine consort is fitting for you." Sam smiled.

"I thought you were human?" Castiel asked, alarmed.

"I was, humans are stupid with their rules of lineage. Even if Lucifer had a son, there's no reason why he would be fit for prince," Sam explained calmly, twisting his fingers through Castiel's dark hair, "I'm particularly good at being a demon, so much so I seem to have earned the title."

Castiel shuddered, thinking briefly of the horrible things you would have to do to earn that title, "Are you going to hurt me?" he asked quietly, voice trembling.

Sam pulled him close, frowning at the boy, "Of course not, you are my lover. You will have nothing but pleasure from me, my angel… Now go back to sleep for a while."

Big, blue eyes stared up at him sweetly, "I'm not tired, Sam." He was lying, he bones felt weirdly sore and he really wanted nothing more than to curl up against Sam and sleep; yet he was suddenly blatantly aware that there was only one reason Sam was keeping him around and he needed to fulfil his role.

Sam was easily excited by the look Castiel was giving him, and he was almost ashamed of how quickly his cock was twitching with incest. But he needed to be in control, he rolled on top of Castiel, looming over him before kissing him chivalrously. Sam moved down Castiel's body placing kisses at his neck, chest and abdomen, happily making the clothing remove in his wake, before his face rested between his legs. Castiel's body was quickly relaxing to his affection and his legs were spread beneath Sam.

Sam chuckled and kissed his thigh, "Oh, I bet you've never had this before."

Before Castiel could ask what he was talking about, Sam pushed both his thighs up, revealing his most intimate parts. Castiel wasn't quite sure how to feel about it, Sam had not looked at him like this last time and maybe he disapproved of what he saw.

"Angel, pass me a pillow," Sam requested, and Castiel quickly obliged wondering why he would need a pillow.

Sam stuck the pillow underneath Castiel's lower back, to keep his hole exposed without his lover having to put in the effort. "Is this better?" he asked tenderly.

"Uh yeah, Sam what are you doing?" Castiel asked, not objecting but still slightly worried.

"I want to try something with you, it might feel a little weird but I hope you like it," Sam smirked.

It wasn't long before Castiel felt the warm, wet tip of Sam's tongue prodding curiously at the rim of his ass; he resisted the urge to slam he legs shut at the strange sensation, but he allowed Sam's curious tongue to explore him further, cringing only slightly. Sam felt his reluctance, and, reaching up to grasp Castiel's cock, he briefly replaced his tongue with an insistent finger.

Castiel moaned, and neither could be sure if it was the sudden attention to his erection or the barely familiar feeling of Sam's large finger. Sam materialised a small bottle of lube and began to apply gently, teasing further with his finger. It wasn't long before he found himself unable to resist tasting him again, finger and tongue working into the small boy.

"Oh!" Castiel squeaked, wanting to tell Sam he was being weird and dirty; but it felt surprisingly nice, so much warmer than he anticipated he couldn't dare tell Sam to stop.

Sam chuckled, and it vibrated into him; the sensation making him spread his legs even wider to get full access. The demon paused briefly to smirk, "Want me to continue?"

Laying back, undeniably aroused, Castiel considered this for half a second; before nodding at Sam enthusiastically, "Please, Sam…"

The demon growled, almost viciously, and for a moment Castiel could see the inky black of his eyes again. Sam thrust his tongue into Castiel, made easy with his hole dripping wet from lube as saliva. Castiel moaned loudly, shifting his hips and trying to spread his legs even further. Though it had only been a few days, Castiel quickly realised how much he had missed the penetration. Being filled this way was amazing and simultaneously not nearly enough. His tongue was nothing but teasing and couldn't nearly provide enough satisfaction.

Sam shuddered at the sound of his need whimpers, prompting him to caress Castiel's hard cock. This wasn't something Sam had ever tried either, but he had always been curious. And now he had his tongue deep inside his lover he was beginning to doubt if a night would pass when he could resist doing it. He began rutting himself against the bed in need of his own completion, surprised to find himself so aroused so quickly; it was apparently common with Castiel, so easily able to stimulate him.

"Sam!" Castiel moaned, bucking down on Sam's slick insistent tongue, "More…" Sam hummed low and deep, so Castiel could feel it deep inside of him. He licked Castiel's insides out, applying random pressure against Castiel's prostate prompting the boy to cry out. Castiel was a moaning mess beneath him, clenching desperately on his tongue. Sam could feel him getting close and it only made him work more intensely to bring him to it.

Castiel cried out a final time before he exploded across his belly, thighs quivering around Sam's head. Sam pulled back, mouth wet with saliva and lube. "Glad you liked it," he breathed, still restricted by his own pressing erection. Castiel gave him a wrecked look in response, flopping onto the bed.

"That was amazing," he gasped, then looked down at, still very much aroused, Sam. He smiled with a new-found confidence, slipping down the bed till he was flush with Sam's chest.

Sam's cock jumped and he looked at Castiel, eyes dark with lust. "You're gorgeous," he told him, looking into his blue eyes, "like and angel, only nicer."

Castiel chuckled, running his hands smoothly down Sam's chest, "Thank you, Sam," he cooed sweetly, mind set on seducing Sam. He kissed his chest gently, lightly pushing Sam of the bed and dropping onto his knees on the floor with him. He was briefly hesitant, realising he'd never had another man's dick in his mouth and he really had no idea what he was doing, "I'm sorry if I'm not very good," he mumbled apologetically to Sam before slipping his mouth over the head of Sam's cock.

The demon groaned, unaccustomed to the feeling of a warm, wet mouth and he slowly sunk into Castiel's throat. It wasn't long before he went too far, and although Castiel tried to relax his throat more, Sam could only get about half his cock in. But Castiel looked so gorgeous trying, kips stretched around Sam's thick cock, bobbing his head slowly, trying not to choke. A darker part of Sam wanted to force him, to thrust smoothly into his mouth until Castiel had every inch of him. Mostly he just wanted Castiel to feel good, to know that he could make Sam feel good. Sam came messily in the midst of Castiel's sloppy blowjob, clutching the boy's raven hair as he groaned loudly.

Castiel was unaccustomed to the taste of semen, and spat it out reflexively. "I'm sorry," he said quickly, "I didn't mean to…"

Sam pulled him to his feet, holding him tightly, "I take no offense," he promised, guiding Castiel back onto the bed. "Castiel, let's lay down to rest, hmm? More fun later."

Castiel entwined his naked body with Sam's, the both of them curling up under a thick blanket, "Thank you, Sam," he whispered, before drifting back to sleep.