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]

Sherlock's hands wandered lower, until they were just above the waistline of his trousers. Since John had no shirt on now, he could feel the warm, smooth planes of his skin.

When John asked the question, the answer came as easily as breathing. "Everything." He didn't have to hesitate or think about it for a moment. Oh god, he still wanted to bite the man, and as he whispered that one word into his ear, he almost did.

But then John reminded him why he shouldn't. Demon blood was death to vampires.

Sherlock drew back just a tiny bit. "I'm not asking you to be my blood servant." He replied. "It's logical and practical, and it would be brilliant.." Another pause.

"Our partnership." Sherlock leaned in and kissed and licked at John's bare shoulder, while his hand moved down his smooth front and rubbed at the front of those trousers.

"We'd be perfect together." His voice was barely a whisper on those last words.

[ihadabadday]

His head spun from the words and the touches. Oh. Oh wow. He shivered, feeling his trousers starting to tighten. Oh it had been so long and he wanted... He needed.

"Wow..." he breathed, bracing his hands on Sherlock's shoulders. The man was now on his knees in front of him and he... Oh god. He wanted it. All of it.

"For a four hundred year old you move really fast." John looked down at him.

[seaweed_writes]

Sherlock made a pained face. He hated being reminded about how long it had been since he had taken a partner, and how absolutely rubbish he was at all of this.

"I told you I'm not good at this!" he snapped, but then came back to himself, and took another tact. He knelt in front of John, kissing his way down his front, until he got to the thin thatch of hair that lead down into the trousers, and whatever lay beneath. He had never bedded a demon, and had never even seen a half demon, so he had no idea what lay under his last layer of defense.

"Live with me." He said, kissing right below John's navel, his hands still on John's perfect arse cheeks. "We can hunt devils TOGETHER. I don't need to share blood to know that I belong with you." He knew this deep in his soul- if he's had a soul any more, that is. As a vampire, he lacked a lot of things that humans did, but a desire to love and beloved was not one of them.

[ihadabadday]

John moved away just a bit, staring down at Sherlock. He chewed his lip, thinking... He wanted. In the very base of him... He knew. He knew that Sherlock was it. It was an odd feeling, and one he loved and loathed and feared.

"I'm not saying yes, yet..." he swallowed. This was such a large secret. But he wanted to share it with Sherlock. It was right.

"But I'll tell you a secret." He leaned down to kiss Sherlock's forehead. "A demon's blood is only poison... If you don't have permission."

[seaweed_writes]

Oh...

OH.

That.. well, that changed everything. If... John wanted it, they could indeed share blood, John could me more than just a blood servant, they could blood bond. And if that was done, nothing in heaven or hell or earth would be able to tear them apart.

Now... Sherlock wanted. He wanted like he'd never wanted before. He'd taken blood servants, humans who catered to his needs and served him until they died or he grew tired of them and killed him. But he found that he didn't want John in that way. He wanted him as an equal.

A partner.

Demons were quite long lived, but he'd never seem a half demon before, and he didn't know if he had a longer lifespan than a human. But he would take as long a he could get with this man.

Sherlock leaned up, and John met him. The kiss was deep and passionate, but not desperate or needy.. If John wanted this as well, there was no need to rush. The had the rest of their long lives.

[ihadabadday]

John pulled back from the kiss and smiled at the vampire. "If you don't mind, I'm going to shift back..." but before he did that, he stretched his wings out, making a pleased noise.

He even let his tail stretch. God what a feeling.

He stepped back and let his power slide over him, his horns and wings and tail fading. Now he was just a shirtless human.

[seaweed_writes]

If Sherlock had to be honest, he actually preferred John's true form. He knew that it took a bit of exertion to keep himself looking like a human, and he wondered why he would want to look like those lowly creatures.

Never mind that he had been one of those 'lowly creatures', though that was over 400 years ago. He'd had plenty of time to get over that.

God, the power that lay beneath that skin, under those small but powerful wings and the sharp mind that lie under those horns.

"You.... don't have to... you know." he said, hating how stupid he sounded yet again. "Be.. human. If you want to be your true self around me..." his voice trailed off.

[ihadabadday]

John knelt down and touched his cheeks, now blunt human fingers running over the smooth skin. "I don't know the coming and goings of people in your flat."

He leaned into kiss Sherlock again, using a bit of teeth into it. The blonde pulled back and smiled.

"We have many years. But I don't want to wait..." he said. John was referring to sex.

[seaweed_writes]

“There are only three regular visitors to my flat. “ Sherlock said. You’ve already met Lestrade. My landlady, Mrs. Hudson occasionally bothers me, and very rarely, Mycroft.”

Sherlock hissed at the use of teeth and nipped back, barely controlling himself from biting down. But he held back.

Of course he knew that John was referring to sex. He had lived 400 years. He knew almost all there was about sex by now.

“Well then.” Sherlock grinned, pulling them both to their feet and taking both of Johns hands. “Let’s not wait.” Without another word he led John back towards his bedroom.

[ihadabadday]

As he followed Sherlock, he let the glamour fade naturally, showing his true form once more. Since Sherlock seemed to like it more.

Once in the bedroom, John sat on the bed. He grinned at the vampire and tugged him down to kiss him.

He ran his hands to Sherlock's hips and squeezed. The power that was under those clothes. He wanted the bruises.

[seaweed_writes]

To Sherlock, it was odious that anyone had to hide their true selves. He had no qualms of letting everyone know that he was a vampire, even if it brought him more persecution and shaming. And it was the same with John. He didn't want John to feel like he had to hide behind a facade for him.

Besides, he wondered what it felt like to be wrapped in those wings, and how sensitive John was with those horns and that tail.

Sherlock was standing over the half demon,. who was sitting on the edge of the bed, his feet still on the floor. At least John only had his trousers on. Did he wear pants, Sherlock wondered? How well endowed were half demons anyways? He had to admit that he was a bit of a size queen- the bigger the better.

"Nnng.. Now who's the eager one?" Sherlock all but purred when John squeezed at his hips. He didn't mind the awkward angle of leaning down to kiss John. He nibbled on the man's neck, so close to drawing blood, but he stopped just short. Exchanging blood was a sacred ritual and had to be done a certain way, and only when both participants waned to be permanently bonded.

Not yet, he thought. But soon, he could at least hope.

[ihadabadday]

"Not yet." John whispered, "But soon..." It was obvious what the vampire wanted. He wanted it too. To feel those teeth sink into his neck or leg or the vein above his heart. He shivered.

He moved his hands and began to unbutton the shirt that Sherlock wore. It was well tailored and the color complimented the vampire.

He was hard in his trousers, his cock pressing uncomfortably against the zipper of the denim he wore.

[seaweed_writes]

Sherlock smiled. Of course John would love the blood red shirt that he wore. But right now, it was just getting in the way of being naked with John. He worked the top buttons down while John was moving from the bottom up. He shrugged it off his shoulder onto the floor.

A quick look at John made Sherlock groan. Fuck, John looked huge under those trousers.. "Damnit. John." He was a size queen, but he wasn't sure if he could take it..

He intended to find out.

"John." He groaned. He leaned down and ground down into John's lap. "You have no idea whar you do to me, do you?"

[ihadabadday]

John groaned when those hips ground against his. He shivered and ran his hands through those gorgeous curls. Everything about the vampire was gorgeous.

He wanted him. He could feel the vampire's want pressing against him.

The half demon shifted and nuzzled his neck, kissing and nipping. God... he had never wanted so badly before. It was such a sensation. To want someone in this way.

"No. None... But you make me want. You make me want to submit. And I've never done that."

[seaweed_writes]

"I... need to see you." Sherlock pulled John up off the bed until he was standing again. Immediately, he started to work on John's trousers, undoing the belt and then undoing the zips. Without pausing, he tugged John's trousers down. Indeed, he wasn't wearing any pants, and Sherlock could see what had been hiding under those trousers.

"John.... fuck..." His eyes went wide.

[ihadabadday]

John flushed when Sherlock demanded. When he undressed him. He shifted from foot to foot. His tail curled around his upper thigh.

"I... I... Is it okay?" He asked in reference to his whole body.

He had scars and tattoos. He wasn't pristine. It made him more normal.

[seaweed_writes]

"John..." He looked the half demon over again. "Have you never seen another.. man before? You are.. huge." Sherlock gulped. God, how he wanted to have that in his mouth, or... well anywhere, really.

"Every part of you is perfect. I wasn't lying when I said that." Sherlock nibbled carefully at his neck, not using his fangs so he wouldn't draw blood. Every part of you. Every scar tells a story and every tattoo means something.

Sherlock ground down against John again, "You are perfect, and you are mine." He didn't even have to use the Thrall for that.

[ihadabadday]

He looked up, face heated. He shifted and smiled shyly at Sherlock. "I... I haven't been with many men. Mostly women." John admitted.

He gasped when he felt that mouth along his neck. Oh... Oh... he wanted. John grabbed Sherlock's shoulders, whimpering.

"Pl... Sherlock. I give you permission." He breathed. He wanted to give Sherlock all. He knew it was sudden, but it felt so right.

[seaweed_writes]

"Are.. you sure?" Sherlock asked, leaning his head back to look into John's eyes. "Do.. you know how this has to be done?" He took a deep breath.

"I have to bite you, and drink from you. I have to take a lot. If you were human, it would almost kill you. And when I am done, you will have to bite me, and drink from me as well. It is... a very.. sensual experience. " Sherlock licked at John's neck, right at his pulse point, right where he would bite.

"This will bond us for life, John. There is no going back, until one of us dies. And that will take a very long time. " He licked at John's neck again, his hand roaming over John's now bare arse cheeks.

"Tell me now, or I am going to bite you, and I am going to drain yo."

[ihadabadday]

John met his eyes, gaze unflinching. "I understand. I know what it means to blood bond."

He rocked his hips forward against Sherlock's. He had known the vampire for three days, he had killed for him. It was all okay.

"Do it Sherlock." He whimpered, "Please."

[seaweed_writes]

"Nnnng.." Sherlock rocked back. John was naked, and Sherlock still had his trousers and socks on. He wished that he had taken them off before that, but it was too late for that now, he couldn't wait another moment."

Sherlock rocked down into John's lap. He licked and nibbled at John's neck, tenderizing and wetting the skin. He reared back, his fangs glistening. With a small hiss, he bit down. His fangs easily tore through the skin, into the vessels underneath. His lips suctioned against John's skin, sucking the blood away into his mouth as soon as it pooled at the surface.

He drank eagerly, taking John's essence into himself.

[ihadabadday]

John cried out when Sherlock began to drink from his neck. Oh... He grabbed onto his hair, wanting to keep him close.

This feeling...

He was starting to feel light headed. But it was wonderful. He groaned, his erection pressing against Sherlock's hips. He wanted... he needed. Oh.

[seaweed_writes]

"Mmmmm.." The vibrations of his voice could be felt against John's skin.

And still he drank.

He knew how much he could drink from a human, but he didn't know about a half demon, so he had to be careful.

God, he wanted John to fuck him with that gigantic cock of his, but he couldn't stop this now. He had to keep drinking. He had to continue.

He started to rut against John, fucking at his lap while he continued to suckle at John, drinking more and more of his blood.

[ihadabadday]

John's hands dropped away from Sherlock's hair, groaning. His world was darkening a bit. But it felt so good.

"Sherlock..." he groaned.

His wings moved and surrounded Sherlock, keeping him close.

[seaweed_writes]

"Nnnnggggg..." The feeling of those wings surrounding him, it was.. intoxicating.

As much as Sherlock wanted to keep drinking, he could see that John was starting to fade. It was almost time to stop.

"John..." John was goring weak, and yet he could still feel that huge cock pressing against his painfully straining trousers.

He kept drinking for a few moments more, until John started to sway and have a hard time sitting up. And only then, finally, did Sherlock move his mouth away, licking at John's wound and cleaning the last of the blood that was trickling out.

"John... It's time.." He had to do it now, while the blood was still fresh and draining from his own neck if they wanted to blood bond. Sherlock rocked against John, desperate to come, but just simply rubbing inside his trousers wasn't enough.