The Black Book - AU - Locked to seaweed_writes

[ihadabadday]

He was lucky with his expertise he was able to find a job relatively quickly in a field he was familiar with. John looked down at his mobile as the alert came through. Christ. It was going to take him at least twenty minutes, if he was lucky, to get to the scene. But, he packed his things into the case and headed out.

He had been in Afghanistan for five years. First as a medic, then a doctor, and finally a hunter. He still was a doctor, but he had been assigned to an elite unit in the desert. Part of him felt a bit odd about all of it. But he didn't quite mind.

He made sure he had everything before he left.

He heard the annoyed voices, before he saw anyone as he entered the room.

"Oi. Who're you?" A man with two days of stubble and mussed black hair asked.

John paused and looked him over before his eyes landed on the gentleman in the suit with salt and pepper hair. There he was. "DI Lestrade? I'm Doctor John Watson, the new Occult Specialist, I just started last month." He gave him a smile, wanting to be nice, but not too friendly. People got jumpy around the occult. He saw it all the time in Afghanistan, and even here in London.

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[seaweed_writes]

He was still lightheaded, even though John had stopped drinking from him- and just in time really- it was going to be a while before his body replaced the blood that was removed. And until then, he would be woozy and weak.

"AAAHH-Ahhhhhh!!" John didn't hesitate, he pushed his huge, thick cock all the way inside of, no pausing to get used to the feeling, no slowing down until his large, full balls slapped against Sherlock's perineum.

Between the pain, and the lack of blood, Sherlock almost blacked out. His eyes fluttered closed for just a heartbeat, and then consciousness fully found him again. He was stretched well beyond his limits, wider than anything he had never had inside of him before, by twice the length and the thickness, at least.

There was nothing Sherlock could do but wrap his long, thin arms around John's neck and hold on for dear life. There was no way that Sherlock could control himself enough to try to fuck John's lap. He was at the man's mercy.

So.... he was a size queen too? Sherlock vaguely thought to himself, having a hard time about thinking of anything besides being slowly fucked by the giant cock. Sadly, his cock, while well endowed by human standards- long but thin, with a little bend upwards- it was nowhere near what John hard. He was disappointed that he couldn't see John being fucked by something larger than himself.

[ihadabadday]

John groaned. "Fuck you're tight. Such a tight slut. Begging for my cock." He groaned.

It had been some time since he had been with someone this tight. But most of his sexual conquests lately had been while he was in his human form.

But this. Being with Sherlock. Laying claim. His.

"I know plenty of demons who will fuck anyone. Shove their head down and fuck them until they pass out, a giant cock in their arse or cunt or mouth. Or every hole they have."

[seaweed_writes]

"Yessss.. morrrrre..." He didn't care that he was begging like a slut. He wanted this.. He NEEDED this, to be fucked and filled by John. He wondered how much come was inside those balls. They were much bigger than human bollocks as well- so did they hold more?

He knew that he would have his answer sooner than later.

Sherlock also wondered, were true demons even bigger than John? He found himself wanting to know, but he couldn't ask, his voice was not working. He also needed to stroke himself, he was hard as a rock and dripping copious amounts of precome, but John hadn't said that he could.

"P-p-please... let..." Was all he could get out. He put his hand close to his cock, but didn't touch it. He had no idea what incurring an half demon's wrath would entail, even vampires knew not to piss off full demons.

[ihadabadday]

John continued to thrust up. Give him what he wanted. What they both wanted. To affirm this new bond. To know each other in every way. To mate.

He groaned and pressed his face against the side of Sherlock's neck that he hadn't drunk from. To not lose control.

"Touch yourself. Let yourself go..."

He was spiralling down and down. So close to his own climax. He wanted to tell Sherlock that demons could shift their bodies into whatever form they wanted, to please their partners or trap new ones. Not that he did that of course. But he wanted to please Sherlock.

[seaweed_writes]

He couldn't even find the words to thank John for letting him do this.. he was afraid he might spontaneously combust if someone, either himself or John, didn't touch his cock right fucking now.

Instead, Sherlock groaned and took himself in hand. Just the act of doing that almost made him come, he was so on the edge and close to climaxing.

He timed his movements with the thrusts of the half demon under in. It only took three strokes before his whole body went rigid, his eyes and mouth opened as wide as they could, and his body shook. His bollocks were drawn up to his body, and his cock pulsed.

"AHHHHHH!!!" He cried out towards the heavens, his head thrown back. In his 400 years, he had never had an orgasm as intense. He saw spots in his vision, an he was pretty sure that he actually blacked out for a short time, but his come spurted in several long, hard pulses that were strong enough to actually hit John in the face, as they were facing each other and he was in John's lap.

His whole body sang and swayed and his vision was blurry and he wasn't sure he was going to survive this orgasm.

[ihadabadday]

Oh was he beautiful. John licked his lips. Next time he wanted to swallow that cock down, lick him clean. Yes. He wanted to submit to Sherlock Holmes. Be his toy. Something he never thought that he would want.

John held him tight as he slammed up into the vampire. Once, twice and then he was coming into him.

There was so much. He could cover Sherlock's torso with it. Or get a female pregnant with it. He even heard stories about demons getting any gender half demons pregnant.

He slumped under Sherlock, gasping.

[seaweed_writes]

"Nnnnnff...." Sherlock was adrift in a sea of dopamine and hormones and post coital bliss. He grunted softy- his brain knew what was going on, he could feel it and see it and hell, even smell it- thought it felt like he was floating a bit a way from his body. But there was nothing he could do but just let John keep fucking him until he was done, until those giant balls were empty.

It seemed to take forever, there was so much come, it was leaking out of him back onto his own arse and thighs, John's legs and thighs, and literally soaking the bed under them. He figured that there would be a lot, but it was more than he had ever imagined, more than could even remotely possibly fit inside of him.

And then, finally, it was over. John was still hard and still twitching softly inside of him, still dribbling the last few drops of come while he slumped down, desperately gasping for breath, just like Sherlock was still doing.

[ihadabadday]

John carefully extracted himself from Sherlock and laid the vampire down on the part of the bed they had just fucked over. He went to get a flannel to clean Sherlock up. He began to wipe away the cum, groaning at the sight of it spilling out of the vampire.

Once they were both clean, he tugged Sherlock to the clean part of the bed and made himself the big spoon, pulling him close. It was comfortable. Happy. He closed his eyes.

[seaweed_writes]

Sherlock was pliant while John pulled out of him, thought he made soft noise at the amount of come that came pouring out once his thick cock was no longer like a finger in the dike. He was quiet and pliant and still while John cleaned him- his arse was still leaking a bit of come, even after he had been wiped down. And he was still and pliant and happy when John, even though he was smaller, made himself the big spoon and wrapped his arms around the vampire, holding him tight against his body.

He made a soft grunting noise, it was all he could do, as a warning. His eyes felt like lead and his body doubly so. He wanted to fight off sleep, he really did, but it was nothing doing, and he was deep in a dreamless sleep in less than five minutes.

[ihadabadday]

John was asleep quickly, having been lulled by the loss of blood and the sex they had. He kept an arm around the vampire's waist, his nose pressed against his neck.

He woke in the morning to an empty bed. What? Oh. Right. John sat up and rubbed his face. He slipped off the bed and went to use the bathroom.

He stepped out of the bathroom and into the kitchen. He suspected the vampire didn't have a lot of, if any, food.

[seaweed_writes]

Somewhere in the middle of the night, Sherlock woke back up, feeling much more rested and like himself. As a vampire, he really only needed a minimum of rest, and he only ate to keep up appearances. He would have been fine for feeding except that John had drained him quite thoroughly.

He looked at John, sleeping beside him, and smiled. This man. HIS man. He was going to get to do this every day. He very gently pulled away from John, who made a soft noise in his sleep but thankfully didn't awake. Sherlock kissed him once, tenderly, then got dressed and went out to feed.

He was back well before the sun came up He thought very hard about going back to sleep next to John, but he knew sleep wouldn't come. It was always impossible to sleep after a good feed, and he had had quite a catch tonight, It was almost like an adrenaline rush after he fed. Of course he never fed enough to either kill or to turn them, so sometimes he had to drink from more than one victim. After 400 years, he knew exactly how far to go without going too far.

So he let John sleep and spent time on his computer and conducting a few experiments in the kitchen. He heard John get up and go to the loo. He wondered, hoped, that John wouldn't regret rushing into what they did last night.

"Good morning John." He said, a bit tentatively as the man entered the kitchen, looking like a human again. He tried not to feel disappointed.

[ihadabadday]

John smiled and pressed a kiss to Sherlock's head. "Good morning. I'm going to run and get myself something to eat." He told the vampire. He was pulling on his jacket. He couldn't exactly wear his shirt, it was in shreds around the flat.

But it had all led to a wonderful thing. He had never felt more complete than he did now.

Grabbing his mobile, he left the flat to go find something to eat.

[seaweed_writes]

Sherlock knee that they had a lot to talk about and plan. John needed to move whatever he owned (and he suspected that it was very little) into the flat.

Sherlock had been trying to research half demons last night after his feed, but it seems that little is known about them. Which meant that Sherlock had a lot of questions and needed a lot of answers.

And he was going to need to go food shopping, apparently.

[ihadabadday]

John returned thirty minutes later, carrying a bag. He smiled at Sherlock. "You have questions. Let me eat, and I will try to answer them."

He knew the rarity of being what he was. A hybrid. Humans tried not to mix with the supernatural creatures. Especially fae and demons. Vampires were often portrayed as elegant and sophisticated. So often people wanted to be around them.

He sat down at the table and unpacked the box. It was a high protein and carb heavy. Something he needed.

[seaweed_writes]

Sherlock nodded, and got up from the table to give John some space to think, and eat. His mind was reeling with questions, and he took the time to sit cross legged in his chair in the living room, his eyes closed and his hands steepled under his chin to organize the questions and figure out which ones that he wanted to ask and in which order.

[ihadabadday]

John finished his breakfast and then cleaned up his mess. He got up and went into the room where Sherlock was. He skirted the trap circle and then knelt down in front of the vampire.

"Hey..." He touched his knees, looking up at him.

[seaweed_writes]

Sherlock had drifted off into his own mind. Despite his quite acute hearing, he had been so preoccupied that it was a bit of a shock to feel John's knees against his. Instinctively, he tensed up and looked towards whatever it was that had disturbed him.

The shocked and angry look faded immediately, replaced by a soft smile.

"Oh. Hello, John." He said softly, almost slightly shyly.

[ihadabadday]

John smiled, his own equally shy. "Hi Sherlock..." he answered. He licked his lips and then leaned in to kiss the vampire. He the pulled back.

"Do you have questions for me?" He didn't have many for the vampire. As most of their lives, or lifestyles, were common knowledge.

[seaweed_writes]

Sherlock eagerly kissed John back, pulling him down into his lap and getting the man settled.

The smile that had been on his face faded. The first question was going to be the hardest, so he wanted to get it out of the way first.

"You are a half demon." He said, as a statement, not a question. "How... did you come about?" The unspoken question was there... was his birth an accident or because of something less than savory? He knew that humans couldn't turn into demons like vampires could. So he would have had to have been born, usually from a demon father and a human mother, from the tiny bit of information he could find.

[ihadabadday]

"There's not much on hybrids out there. We don't like bringing attention to ourselves. But, my father was a human and mother a demon. They, unlike other hybrid's parents, were very much in love. My mother, surprisingly, didn't care for the demon way of life. He still remembered the Garden, being an angel before being cast other. Many of the demons who rape human women, are created by much older demons, by twisting their souls. It's a process that happens once the human dies." John noted.

"I was raised as a human until my powers started to manifest when I was sixteen. My mother took the time to train me, teach me how to blend in and extend a glamour. I don't think she counted on an overly curious vampire."

[seaweed_writes]

Sherlock listened intently, taking in every morsel of information that he could. It seemed that not only was John not nervous or hesitant to talk about his past, but that it was actually, for the most part, a good one.

"So, your mother was one of the Fallen, the angels that were cast out of the Garden." He said. That was rare, he knew. There were all sorts of demons of all types. But the Fallen, they were special. They were the oldest of the old, created when the world was still new. That meant that she was eons old. She could have borne many offspring in her thousands of years. Were there other half-demons out there, half siblings of John, he wondered? When had John been born, and was his human father still alive?

Those were questions that he didn't ask. Maybe another time.

The next question was just as tricky as the first. It would affect how Sherlock went into this new, burgeoning relationship.

"Demons can live thousands of years, but humans less than a century. I am sure that you are not as long lived as your mother. How long to half-demons usually live?

[ihadabadday]

He shrugged a bit. "Not sure. Like I said, we don't like people knowing things about us. Even other hybrids. From what I can glean.. Every hybrid is different, since the parentage is different." John answered.

"I aged slowly at first. We lived in an area with a lot of supernatural creatures, so I didn't notice it. But Dads was already in his seventies when I turned sixteen. He died when I was eighteen. Mum is still in that village. The other demons tend to leave her alone."

[seaweed_writes]

So his mother is a bit of a pariah, and his father is dead. Sherlock knew he should say something like 'I'm sorry' but he'd never been very good at hollow platitudes.

As for John, Sherlock had no ides how long that he had with this man. It could be a century, it could be several. Not knowing did bother him. He needed to steel himself for the time when John would no longer be by his side.

And they had just bonded less than 12 hours ago.

Even though John looked human now, he remembered those wings wrapping around him, which cause him to shiver.

:"Your wings." He said, his voice lower now. "Can you fly with them?" They were fairly small for his body, but they were well muscled, and powerful. He also wondered how sensitive they were. That made him shiver again.

[ihadabadday]

"If I need. But I much prefer to get myself around normally." John shrugged a bit. He shifted to be a bit closer to Sherlock. He felt the need to be here, to stay close.

"Anything else?" The blonde man blinked at him, a smile on his face. He was naked from the waist up, save for the pendant he wore.

[seaweed_writes]

Sherlock made a little noise while John re-settled himself in his lap. Of course having him there was doing things to him, but he was trying not to think about that, while they were attempting to have a serious conversation.

It seemed like every time he thought he had asked the worst question, another came up. And so it was the case here.

"I.. in my research, I have read that half demons, even male ones, can be impregnated by powerful full demons." He looked down to John's trousers, then back up to himself. "Is this an issue that we have to worry about? I am not one of the Old Ones. I was changed in the early 1600's, here in London. So I am not one of the very powerful vampires." He paused for a moment. He was about to tell John something that very few people knew.

"But.." He said, pausing to gather himself. "I was bitten by one of the Old Ones, one of the Few." There is so little known about them, even less than half demons, I wager. Even I am not sure if that means that my life as a vampire is different than others who weren't bitten by an Old One. We vampires very rarely meet up, and usually when we do, one or both end up dead. We are not very.. social creatures."