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Title: The Vampire Lord's Pet – Monsters Are Only Human Too

Fandom: Percy Jackson and the Olympians / Heroes of Olympus; AU

Disclaimer: All rights reserved to Rick Riordan for he created the awesomeness that is Nico di Angelo. And everything else related to Percy Jackson and the Olympians / Heroes of Olympus. Aside from the Gods, they belong to the old Greeks. This fanfiction and its OCs on the other hand are entirely mine. No money is made with this, though reviews are more than welcomed.

Warnings: shounen-ai, explicit intercourse, anal, slavery, blood-play, vampires/werwolves, possessiveness, mating/soulmates, knotting, rough sex, very minor character death (you won't mind), shoujo-ai, threesome, hetero

Main Pairing: Nico/Percy

Side Pairings: Piper/Annabeth, Jake/Will, Frank/Hazel/Leo, Jason/Reyna, Chris/Clarisse, Charles/Silena, Grover/Juniper, Tyson/Ella, Bryce/Drew

Percy Jackson Characters: Perseus Jackson, Nico di Angelo, Leo Valdez, Hazel Levesque, Frank Zhang, Will Solace, Jake Mason, Annabeth Chase, Piper McLean, Reyna Avila Ramírez-Arellano, Jason Grace, Clarisse la Rue, Chris Rodriguez, Charles Beckendorf, Silena Beauregard, Rachel Elizabeth Dare, Grover Underwood, Juniper, Tyson, Ella, Calypso, Bryce Lawrence, Drew Tanaka, Nancy Bobofit, Mrs. O'Leary

Summary: In a future where vampires overtook the world in a war that was more of a massacre than a fair battle, vampire lords rule over humans. Humans could lead a relatively save life under the protection of their respective vampire lord, but those too poor often ended up giving their blood and serving as food for vampires, so-called 'pets' who made time-contracts with vampires.

Having led a poor life, Nico finds himself on such a market-place, even though he despises vampires. Out of all the vampires, he ends up sold as a pet to a lord – Lord Perseus of New York.

Will Percy change Nico's opinion on vampires? And what happens when a werewolf-attack, meant to assassinate Percy, changes Nico? Can a vampire and a werewolf live with each other? And what happens when the contract between them runs out?

The Vampire Lord's Pet

Monsters Are Only Human Too

Chapter 1: Rules of a New World

Humans were worth as much as vampires were willing to pay for them. That was the harsh truth.

Sick of living in the shadows and hiding from an inferior race, the creatures of the night had taken over and enslaved humans more than hundred years ago. Twelve powerful vampires had taken over the world and led this revolutionary war. As many old vampires, they had taken on pseudonyms. Seeing themselves as more worthy and superior to humans, they chose the names of the Olympian gods. Overlord Zeus was ruling over North and South America, mocking humans by sitting in the White House, having one Olympian representing him in Canada and one in South America. His sire-brother Poseidon, the second most powerful one of the twelve, had moved to Europe, ruling the Eurasian continent, together with a handful of Olympians.

Under the twelve members of the so-called Olympian Coven ruled the lords. One lord for every country in Europe, one lord for every state in the US. Now every state in the US had a vampire lord. Vampires were the dominant race. Humans did the manual labor that vampires felt too good for and those who couldn't even find that kind of work, they ended up as human pets.

Selling themselves as food-sources to vampires.

Because the war for world domination had already taken a large part of the human population and what was left should not be wasted for a dinner. Vampires needed humans. They couldn't afford a genocide. So vampires kept their food alive, keeping one human as a regular food-source for months at a time. Due to some human activists among the vampires, contracts were made, over a certain time, where the humans would stay with the vampires, being cared for with medical services, food, clothes and a roof over their heads. When the contracts ran out, the humans were paid a large amount of money. Humans weren't treated as equals to the vampires, but at least they were treated moderately fair. They had chances at lives, good lives even if they were lucky.

Nico di Angelo was not lucky. His parents had been killed when he was ten and his sister Bianca started to take care of him. But his sister had died too and he had been living with his best friend Frank at Frank's grandma's. And grandma was an old lady, taking care of two teenage-boys was a lot of work, had taken its toll on her. Life had taken its toll on her. She had cancer, but the treatments were too expensive for them. They needed the money to save her life.

They had never really finished any school education though. So the only way to make easy money was the Pet Market. Nico didn't like the idea, not even the sound of it. They weren't animals.

"It's slavery", stated Nico with a glare.

"Well, not really. I mean, we make a time-contract and when it's up, we get money", countered Frank with a frown. "Besides, the only thing we have to do is give our blood. It's not like it's some weird sex-thing, or that we have to clean and stuff. We can do whatever we want, as long as we serve as breakfast, lunch and dinner. It's easy money."

Nico turned to look at his friend. There was obvious worry in Frank's eyes. Of course there was. Frank's grandmother was very sick and they didn't have the money for her treatment. After everything she had done for them, they owed her that much. Nico took a deep breath and nodded.

"Well then, let's get a check-up", grunted Nico with a short nod.

Before a human could enter the Pet Market, they had to get thoroughly checked. Only healthy humans could sell their blood, of course. They would also be labeled by blood-type. It made Nico wonder if the different blood-types really tasted different to vampires.

"And you're really fine with it?", whispered Frank concerned.

Vampires had killed Nico's parents. His face darkened some. He hated those heartless monsters. Regardless of how they acted as though they did good for the humans and 'cared' for their humans, Nico knew that whenever a human acted up, it was easy for the vampires to just rid themselves of the protesting humans. They were living as little more than sheep. Vampires were cruel and vicious. Why else would they have the time-contracts – noting what human was to stay with what vampire for how long, to make sure the humans didn't end up dead before the time was up. Vampire lords wouldn't need to ensure such rules if they'd trust their vampire subordinates.

"She practically raised me for the last seven years", whispered Nico softly, looking at Frank. "You guys are my family. It'll be fine. We'll make a short-term contract and get the money."

They headed over to the hospital to get their check-up done and get the paper-work done. As far as they knew, applications were done in hospitals so the medical history could be checked right away before the humans were accepted. The two friends were nervous as they approached the gorgeous receptionist. The young nurse smiled brightly at them.

"Hello, boys. What can I do for you?", asked the woman with the name-tag Silena Beauregard.

"Uhm, hello, Miss Beauregard", smiled Frank shyly. "We, uh, we want to give blood. To vampires."

"You want to apply as pets?", inquired Silena curiously.

"Yes", gritted Nico out, hating the term.

"Charlie!", called Silena loudly, startling the two boys.

"Yes, love?", replied a tall, bulky, dark-skinned man as he rounded the corner.

For a split-second, Frank and Nico feared that she had called security to throw them out again. Were they unfit? The man easily towered over them both and neither were exactly short.

"Those two lovely boys want to apply as pets", smiled Silena brightly. "Would you be a darling and bring them to Doctor Solace? He's on check-up duty this week, isn't he?"

"He and Doctor Hein", nodded the man in agreement, smiling a little at the woman.

"This is Charles Beckendorf, he'll bring you", explained Silena. "Now be good and go with him. He'll bring you to the doctor to get the check-up, then he'll be supervising your physical tests and bring you back to me to fill out the applications, if you don't fail your tests."

"Sounds like school", muttered Frank with a frown.

"Vampires don't just take any random stranger into their homes", grunted Charles, his voice dark as he led the way. "Seeing as pets accompany the vampires to official meetings, they enjoy taking good-looking humans who are also physically fit. Kind of like with cars, you know?"

"To impress each other", nodded Nico, his aura darkening more and more.

So he was going to become an accessory to some self-absorbed vampire. Wonderful. They entered a room with a brightly smiling blonde doctor waiting for them and Nico started to think that the guys working here were all high on their own drugs. What was there to smile about?

"Hello, I'll be your doc today. You can call me Will", introduced the blonde, still smiling. "Beckendorf, why don't you take one of them to see Kayla? She's not busy at the moment. You do the physical with him, let her do the check-up. I'll keep the handsome one."

Nico blinked in slow-motion as Beckendorf walked away with Frank. And thus began an awkward hour of being poked, prodded and having about half his blood taken for various tests. All while being flirted on, which really was not as much fun while being down to his boxers. It made him feel vulnerable and he hated that. He also disliked that they had taken Frank with them.

The two boys had barely been apart ever since they met seven years ago in a small comic shop. Nico had sneaked in and wanted to steal something – he had always loved comics and Mythomagic and the shop had the new Mythomagic figurines in. The owner, Frank's grandmother, had caught him. Instead of sending the boy away or calling the cops, she had offered him a warm meal. Apparently because the way he had stared at the figurine had reminded her of her own grandson. It turned out Frank was as obsessed with Mythomagic as Nico. When the boy had returned home that night, the two boys had hit it off right away and after some inquiring, Frank's grandma had found out that Nico was living on the streets. They took him in and offered him a family.

"Okay, gorgeous. Now that that's done, let's get you hot and bothered", smirked Will shark-like.

He left the room, urging Nico on to follow. Nico wasn't exactly used to that kind of attention. They were joined by a bulky guy in a similar gym-attire as Beckendorf. The guy flashed Nico a grin before wrapping one arm around Will's waist to pull the blonde flush against his chest.

"Hello, babe", growled the trainer, kissing Will rather passionately.

"Ja—ake", complained the doctor, blushing and hitting the guy's chest.

"This is even more uncomfortable than the flirting", muttered Nico beneath his breath.

Jake turned his attention onto Nico, fully now. Well, one of his hands still slid into the back-pocket of Will's jeans. "I'm Jake, I'm your trainer. If you flirted with my boyfriend, I'll be putting you through hell now. Because all of this is mine. I'm sure we'll have a lot of fun."

"I wasn't even-", started Nico to protest, staring wide-eyed.

Will smirked at him devilish as he passed Nico. "Sorry for the trouble. I just really like the jealous sex I get after I flirted with a patient. And you are nice to look at. Have fun!"

With that, Nico entered his personal hell. His stamina was tested. Running, riding a bike, doing push-ups, swimming. Jake put him through everything until he was ready to drop dead.

"You're fit", noted Jake surprised at the end of it as he showed Nico the showers. "You have potential. I'll note that down for your application. Get showered and Will will pick you up. If I catch you staring at his ass, I'll make sure you end up at a bad place."

There was a vicious promise in Jake's eyes as he left. Nico just groaned and collapsed against the shower-wall, blinking surprised when he noticed the naked Frank in the stall opposite his.

"Wow. Haven't seen you that worn out since we ran from the cops two years ago."

"My doctor likes jealous-sex", moaned Nico annoyed.

"You're not making sense. At all", snorted Frank amused. "But you passed?"

"With flying colors", nodded Nico, turning the water on. "Oh god. Warm water. Heaven."

They hadn't had warm water for two months now because they hadn't been able to pay the bills. Nico got lost in the moment, until Frank called out for him. They got dried off and dressed and by the time they left, Will was already waiting for them. Bright smile in place and a large hickey on his neck. Nico glared at him as though he was trying to will him to fall over dead.

"So, your test results are done – yes, we do put a fast-run through those – and you're both cleared. No diseases. In fact, you're both perfectly healthy and in top physical condition. Which is just perfect for the event coming up", hummed Will as he led them to an office. "Now, Miss Beauregard will interview you about your life and all that boring stuff she needs to start a record for you guys. She will be your go-to contact too, by the way. You're cleared to enter the Pet Market and start looking for an owner by next week. If you find someone, Miss Beauregard will make a contract and if your owner ever mistreats you, you are free to contact her for help."

"Great, first thing we're warned about is being mistreated", muttered Nico darkly.

"He's a real, little sunshine", giggled Will amused. "I know just the vampire for you. Well, as far as I know, he'll be at this week's market too and I'm sure he'll pick you."

Nico was not looking forward to meeting whoever Will was talking about. Then again, Nico wasn't looking forward to meeting any vampire at all. They were brainless, heartless monsters.

/break\

It was embarrassing and humiliating. They were wearing skin-tight brown natural leather pants and nothing else. Well, that wasn't completely true. There was the heavy collar around their necks as they were standing in a line with all the other pets that were up for auction today. Silena was with them, as promised. Apparently she was the head of their district division of pets, those who had been checked in her hospital. She was smiling brightly, bouncing on the balls of her feet. Her boyfriend – as far as Nico could tell – had come along too. Beckendorf. To make sure no vampire tried any funny business with the pets before they were bought. They were the only ones in the room, only Silena, Beckendorf and the pets their district had to offer. Apparently every district had an own room in this auction house to allow the vampires with preferred sellers to have first pick.

Suddenly, the sound of trumpets could be heard and Silena shoved them hard. "Kneel! The lords are here! All humans have to kneel in the presence of the vampire lords!"

Frank and Nico exchanged a look before they found themselves on the ground, the loud announcement startling them. "Lord Perseus of New York and Lord Leonardo of Louisiana."

It was nerve-wrecking, really. It had been even before, but now that Nico was kneeling, he was feeling vulnerable again. That aside, he couldn't see anything. He was feeling helpless.

"Silly!", exclaimed a high-pitched voice, startling Nico even more than the announcement had.

"Sh! You're supposed to behave yourself in public", scolded a female, stern voice.

"You're no fun, Calypso", pouted the previously high-pitched voice, now normal again.

"Hello, Lord Leonardo", smiled Silena's voice amused. "It's good to have you here again."

"You're supposed to call me Leo. I'll throw you into the dungeon one of these days because you always disobey my order to call me Leo!", continued the pouting voice.

"You're not throwing any of my subjects into any dungeons, Valdez." The new voice was oddly pleasant, like the waves washing over the shore.

"Yes, Lord No-Fun", huffed Leo.

"You're both an embarrassment for all vampires", muttered Calypso's voice.

"So, do you have anything special for us?", asked the pleasant voice.

"Actually, I got one especially for you. Will recommended this one just for you", said Silena, sounding rather mischievous. "This one here. He said you'd have a lot of fun with him."

"Mh. Interesting."

Nico gritted his teeth, glaring at the feet in front of him. He officially hated that stupid-ass doctor. Now some strange vampire – he didn't believe that it was really their lord, there was no way a human like Silena would talk so casually to a vampire lord – would walk around him, look him up and down and see if he was proper to be a pet. He wasn't a damn puppy.

"Hello", grinned the pleasant voice as suddenly, a face appeared in front of Nico.

Nico was so surprised, he jumped back some and landed on his butt. The vampire smiled a little where he was kneeling in front of Nico. He was unnaturally beautiful. But not in the way Nico was used to from vampires. He knew that vampires were gorgeous to lure their prey – humans – in. They were like perfect cut-outs from model-catalogs. But the one in front of Nico was different. It was a natural beauty, like a piece of nature. The pitch-black hair was messy, even though vampires normally were very serious about their looks. His skin was pale like porcelain, as normal for a vampire. Rosy lips were pulled up in a smirk, revealing the long, deadly fangs. The only thing aside from the ruby-red eyes that gave away that this in front of Nico was not a beautiful angel but rather the devil itself. He was wearing fine and expensive clothes, all in different shades of blue.

"Heh, you're cute", laughed the vampire amused and tilted his head. "Sorry, I didn't mean to startle you. So, what's your name? Story? I mean, there must be a story that you're selling your blood."

"Lord Perseus, if you'd please behave fittingly to your title", chided the cold girl.

Calypso, if Nico recognized the voice correctly. It was a beautiful, caramel-haired vampire. Nico flinched, expecting for the low vampire to be punished for talking that way to a lord. But instead of reacting like every other vampire Nico had ever seen in the streets of New York, Lord Perseus pouted. He pouted. Nico had never seen a vampire pout. Or look cute. Vampires weren't supposed to look cute. This was not in a life-time a vampire lord. Nico wasn't buying it.

"Leo! Next time, we take my servant with us. Yours is no fun", complained Perseus.

"Totally. Piper is always nice to me while Cally bosses me around", agreed Leo eagerly.

The beautiful dark-skinned female hanging off Leo's arm giggled and leaned in to kiss Leo's cheek. "We had to take her. You know I can't deny you anything, sweetheart. Someone has to say no to you and you know how good she is at being mean to you."

"Now, your story", prompted Percy again, returning his attention to Nico.

When the human was still sitting on the ground, Percy just joined him, sitting cross-legged on the ground, which only earned him another chiding from Calypso. Nico sat up a bit, shaking.

"I... My friend and I, we need the money for his grandmother's treatments", replied Nico.

"That's the sweetest thing I've ever heard", declared Percy, smiling brightly. "Who's your friend?"

"Uhm, that would be me, sire", mumbled Frank, sounding very nervous.

"Hell-o", purred Leo as he saw the nervous, muscular guy. "Ha—azel, can I have him? Please?"

"You're the lord, you shouldn't ask her for permission", chided Calypso irritated.

"But she's my adviser. So she has to advise me what would taste good", grinned Leo.

"Well, he looks like he's man enough to take us both on", stated the golden-eyed girl, causing Frank to blush furiously. "And he's cute. That would be quite the unique souvenir..."

"We... We'd need part of the money beforehand, for the treatment", said Nico seriously.

"Oh, that wouldn't be a problem", smiled Percy and stood. "Silly, would you get everything ready?"

"Of course, my lords", nodded Silena hastily and bowed down.

Nico did not have a good feeling about this.

Author's note: A little early Christmas present from my side! This was supposed to be a oneshot, but it kinda got a life of its own and seeing as I already did a multi-chapter story on vampire!Nico and werewolf!Percy, I figured it's only fair to also do it the other way around. Though, for now Nico stays human.

Next chapter will have Nico and Frank moving in with the vampires and Nico and Percy get to know each other a little!