I don't own durarara.

Warning: Yaoi (boyxboy). Sexual content and profanity.

Summary: Izaya finds humans interesting and entertaining, but one in particular, catches his whole attention with out trying.


Izaya laughed as he watched his humans scramble around for shelter.

It was raining.

His bright red eyes shining with mirth, as they reacted the same, yet differently. Some would find shelter under an umbrella or under a building, while the unlucky ones, the ones that did not watch the weather, hid under a newspaper or bag/briefcase.

They were so interesting to watch. Such a harmless occurrence had them going wild, and it made him wonder in delight how horrified they would be to learn that true danger lived within their society.

All of them were aware, yet blissfully naïve.

Each one knew of the word vampires, but mostly all saw them as fiction. The few who believed in them, had a horrible misconception of them.

He applauded them when they guessed correctly, when they described a characteristic that was truly vampire. They were right about them living for decades and love for blood, but they were so narcissistic in believing that they were the best source in taste.

Yes, some found the blood of human to be delicious, but he found it revolting.

And it wasn't only because he was allergic, one can be allergic to something and still find it delicious, but because it was either to sweet or too sour. They were wrong in believing that without their blood, vampires could not survive.

Humans weren't the only creatures that had blood. Insects and animals did too, sure some where cold blood or didn't have much of it, but he found their taste to be exquisite.

Vampires, although a species in a class beyond most understanding, had blood as well. Their heart might not needed it, but their brain, just like the humans, needed it to keep them alive.

It was true, that at one point, every vampire was a human, but dear lucifer needed his entertainment as well.

Don't get Izaya wrong, he also applaud them for their imagination. He never understood the theory of them being selectively invisible; the moment a mirror or even window was around their identity as a vampire would be revealed. More laughable was how their weaknesses were so mundane.

A cross, although hated truly by their own "god", did not cause them to combust nor scare them. Holy water did not deteriorate them or burn their skin, probably caused more harm to humans. Garlic was just self-explanatory, if it didn't hurt humans, why would it hurt their species that carried a higher power? And the one that was, personally, Izaya's favorite; the stake to the heart. It didn't even make sense, their heart was an empty vessel that they carried because it was a memory of their past life.

Not that a stake could not kill them, just pierce their head and they would die, of course they were far stronger so it would have to be a really hard hit.

Either way, Izaya found humans interesting.

He might not enjoy their taste, but he enjoyed manipulating them without using his power. He found that even without the use of his magnetic eyes, he could twist and bend them around with pretty words and "trust". It thrilled him, to know that he could impact a creäture without even needing them, especially since essentially they were his weakness.

Consuming their blood could kill him, the same with touching it, but just like humans they also had medicine to cure their reaction. Of course he didn't find them as his weakness, he enjoyed playing with them, even making them bleed at times knowing the risk it could cause him.

Every human he has met, has fallen for his charm and he enjoyed using it against them. Of course there was one human that was different.

He was the only human who saw him for what he truly was; a flea. Izaya remembered the first time he heard the man call him that; it described his species so well and the man didn't even know it.

Shizuo.

That was the man's name. He did not fall for his charm, and it both infuriated and intrigued Izaya.

Izaya quickly became attached to the blond, doing his best to annoy and catch his undivided attention. The only human that could actually kill him and other vampires with his hands, yet would probably feel guilty over it.

It was laughable, to see other humans run from this man, afraid of his power and anger, not knowing he was the kindest (when calm), honest, and the only one that could protect them. Izaya called him a beast and so did everyone else, in reality they were more beastly than him. Even so, the beast did have some people who understood him. His brother, the few friends he had, and recently a blond women.

She truly infuriated him, the one human he truly hated. She took his attention away from him, and Izaya did not enjoy it. No one was allowed to manipulate the one human he could not. Well at least not until he succeed in doing so.

So Izaya, for the first time since he found out he didn't need it, decided to use his bright red eyes to catch the one human that he wanted.

He waited until the blond got off work, at night, and when the blond walked to where he was, Izaya chose to make his presence known.

"Shizu-chan~!" he watched the man stop and turn to face him. Shizuo only growled in warning, before leaving him behind, but when did that ever stop Izaya?

"How rude Shizu-chan~!" he exclaimed, using his power to parkour quickly and land elegantly in front of the blond. Shizuo looked shocked at his sudden presence in front of him.

"What the fuck do you want flea?" the blond asked him, confusion still in his face at how quickly he got in front of him.

"Well Shizu-chan I just wanted to talk. Wouldn't you like to talk," he purred as his eyes began to shine brightly. The blond became stiff as he gazed upon his eyes, not responding just looking into his eyes. Triumphantly, Izaya moved closer to Shizuo, arm lifting so that he could touch the blonds face.

But of course, Shizuo wasn't like any normal and the moment his hand got close to that gorgeous face, he grabbed his wrist tightly. Mentally laughing at Shizuo's unpredictability, he groaned when the blond roughly grabbed his other wrist and slammed him against the nearest wall. Effectively pinned, Izaya smirked at the blond, feeling the force on his wrist tightening.

"Why the fuck are you eyes so bright flea?" the blond said, his face getting closer to his. Izaya couldn't help the crazy laugh that he let out, the blond was truly magnificent.

"Oh Shizu-chan~ you sure are a smooth talker," he kept laughing, as the blond punched him and then grabbed his jaw tightly.

"I see, you really are a flea," the blond said, as the hand holding his jaw created enough pressure to make his mouth open and reveal his two sharpened teeth. Without warning, the blond crushed their lips together and kissed him roughly. The kiss was all lips, tongues, and teeth.

Not for a second, did Shizuo lessen his grip on him, he kept the dominance and Izaya found it beyond intoxicating. He groaned when the blond bit his lip just right and pushed his body against his own. The kiss broke, with a string of saliva still connecting them, when they heard people walking to where they were. He almost whined as the blond pulled away, but to his surprise, his blond didn't let go of his wrist.

"Neh~ Shizu-chan. Are you planning to turn me in? or are you going to keep me as your personal prize? How absolutely kinky of you Shizu-chan!" he exclaimed, as his blond dragged him to his apartment. The grip on his wrist tighten almost painfully, and Izaya smirked at the human's strength.

Sure the blond was strong, but if he wanted to, he could have pulled away from the blond a long time ago. But he found the situation thrilling, both mentally and physically.

"Shut up flea," was the blonds only answer, before he dragged him into his apartment. Izaya looked around and whistled playfully.

"Nice place Shizu-chan," he chuckled when the blond just growled at him and let go of his wrist. His teasing stopped when he noticed a table with pictures. They ranged from family portraits to friends gathering, each one had a grumpy looking blond staring at the camera, causing Izaya to laugh.

That is until he crossed the one picture that set he blood on fire, it was a picture of his blond and that blond women. She was right next to the blond and a dreadlocks man was standing on the other side, like a third wheel. He angrily stared at the photo, until the blond spoke.

"Are you just going to stand there and look at my photos all day flea?" the blond was leaning against the wall leading to the bedroom, and staring intently at him. Turning to the blond, he smirked and made his way to the human until he was standing right in front of him.

"And why exactly did you bring me here for Shizu-chan? I thought you hated me?" he whispered hotly against the blond's ear, and wrapping his arms around the blonds neck.

"Shut up flea. It's all your fault, so take responsibility," the blond whispered into his ear and wrapped his arms around him. No longer wanting to talk, the blond grabbed the back of his head and once again a messy kiss started. In a blur, they ended up in Shizuo bed, both to engrossed in each other to care about when or how they made it to the bedroom.

Bodies boiling with heat, they clawed each others clothes off and for the first time in his whole life, Izaya was enjoying the taste of a human. His eyes became deeply red and his fangs grew, as they increasingly became intoxicated with each others taste and feel. The blond scraped his teeth against every patch of skin he could find, driving Izaya crazy with the need to do the same, but still aware that he could die if he punctured Shizuo skin and drank his blood or even got a drop on his skin.

Needing to occupy his mouth, he brought Shizuo lips back to his lips and an intense kiss began to take them further into an aroused state. Hips began to thrust together, each moaning as the pressure caused pleasurable sparks to course through their bodies. The teasingly kissed, caressed, and thrust until they were both moaning lewdly.

Soon they were both fully naked and needing their release badly. Not pleased with the slow pace the blond was going at, he used his strength to topple the blond down and he straddled him. The blond tried to switch their position once more, but Izaya placed one hand on his chest, effectively using his strength to keep him down. He smirked and licked his lips, watching the breathless way Shizuo looked at him and hungrily watched his lips.

Lifting his hips and hovering over Shizuo erection, he thrust his hips down and engulfed the erection in one thrust. Shizuo groaned loudly, as he arched at the feel of being filled. Placing his hands on the blonds chest, he stayed still and teasingly rotating his hips, causing sparks of pleasure and using his nails to dig lightly into the skin of the blonds chest and raking them down, enjoying the way Shizuo face twisted in pleasurable pain. The blond, not one to just lay there submissively, grabbed his hips tightly and thrust his own hips up.

Izaya threw his head back and let out a moan as Shizuo repeated the action over and over again. Needing something more, Izaya lifted his hips and thrust them down just as Shizuo thrust his hip up. Both moaned and the slap of skin became louder, no longer thinking of anything but their release. Their thrusts became sloppy and hurried, his moans causing Shizuo to thrust harder and faster, and making Izaya to use his own power to create a pace that might have killed a normal human.

It was amazing.

Eventually their moans changed from noises, to each other's name, as their release became closer. As they got closer, Shizuo sat up and Izaya wrapped his legs and arms around Shizuo. They kissed and with a final thrust, both shuddered as Shizuo came inside him and Izaya came in between their bodies, losing his self-control and biting the blonds neck.

As the high of release left them, the horror of what he did, caused Izaya to push away from Shizuo and he went to find his medicine. His vision was blurring and a burning sensation started to spread inside his body.

"What the fuck- Izaya?" he heard the concern in the blonds voice. He was on the ground trying to make it to his medicine, but the pain was preventing him. The blond hurried to his side and lifted his head so he could look at him.

"Wha-" the blond started probably shocked at the rash and swelling that was spreading.

"Blood... Allergic to human... Shizuo medicine," he gasped and tried to keep himself awake.

"S-shit you idiot," Shizuo said as he frantically searched for his medicine, and even though he was in pain, he smiled at the blonds concern. His eyes started to become heavy and he knew that he wasn't going to make it if Shizuo didn't find his medicine soon.

"Izaya!" Shizuo screamed and Izaya opened his eyes before closing them once more.

It hurt so much.

"Come on you stupid, flea. Open your mouth and swallow the pill" he did as Shizuo said and took the pill. Still, even after he took the pill, Izaya could not stay awake and the last thing he heard was Shizuo pleading with him to wake up.

Izaya felt extremely warm, a feeling he had not felt since he was human. Opening his eyes he realized what was the source of his warmth, Shizuo had his arms around him and they were both covered by a big blanket, increasing the warmth.

"Fucking idiot, don't fall asleep after scaring me with that episode of yours" he heard Shizuo grumble.

He couldn't help but laugh at the next thing Shizuo said.

"I thought you fucking died, that is until you started snoring loudly,"

Shizuo really was to kind.

"W-what don't you laugh you idiot," Shizuo said, causing Izaya to laugh even more. Annoyed, Shizuo effectively shut him up by grabbing the back of his head and kissing him until he was moaning. The kiss broke and they stared at each other, Izaya feeling insecurity befall him.

"You're a vampire." it wasn't a question, just a statement. He squirmed at the scrutiny, Shizuo eyes had on him, and he looked away hating that this human was the only one able to make him feel.

"Got a problem with that Shizu-chan," he smirked, already expecting some sort of rejection.

"No," was the blonds simple answer, and he wrapped his arms around Izaya, bring them both down and covering them with the covers.

Slightly shocked, but knowing how unpredictable Shizuo was, Izaya let himself be held.

This human, he promised himself, was the one human he would never let go.


So this is actually a one-shot I'm planning on making into a multi-chapter story. I've always found vampires interesting, especially after watching interview with the vampire when I was younger, so when I re-watched it yesterday this came to me. I've also been seeing a bunch of vampire fics and it been itching in my mind, not letting me think of anything else. Still I wanted to do something original and something I had never read before, thats where the whole allergic vampire came to mind (sorry if it's not as original, but I've never read a fanfic with the same plot). Anyway please tell me what any of you guys think, should I continue it?