A/N: So, I was a tad surprised with the amount of support people are giving this story. I'm glad people like it because I'm not giving it up now.

I made some mistakes with the terminology in this story last chapter but I've cleaned it up nice and proper. All should be good now.

Enjoy!

Shizuo Heiwajima had never been quite sure where he fit into the strange world he lived in. People were all the time trying to help him out with this problem, classifying and reclassifying him, waiting for something to stick.

He was an Alpha, but that wasn't exactly the best starting place, considering the fact that he didn't engage in much of the posturing Alpha's seemed to find necessary. Most of his rank didn't view him as one of them because of that minor detail, not that he really cared.

For most of his life he'd been cursed with monstrous strength, but that was something even Shinra had failed to explain. It certainly didn't help him any. As a result of it, and a regrettably short temper, he didn't have many friends.

Even among those he counted as friends, he was skirted around, treated with caution because everyone was waiting for the inevitable explosion.

Shizuo just couldn't seem to find anywhere he wouldn't be shunned.

Well, maybe there was one place, one person that was different. A fucking shame they hated each other.

Shizuo had always felt confined by what people thought of him. They'd never admit it to his face, they all had their excuses, but in the end, the result was always polite isolation. Just because of things it wasn't right to give a name to.

Then he came along, someone willing to acknowledge Shizuo for who he was and blatantly hate him for it. Not fear, as so many others before, just hate. It was undeniably refreshing, even if he wanted to beat the shit out of that flea.

He was allowed, if even for a moment, to be Shizuo, and he wouldn't pass it up for the world. It didn't matter that he was an Alpha or quite possibly a monster because he wasn't exactly fighting a human, now was he?

And no matter what else happened, he would probably stick around this wonderful, detestable person because, well… Shizuo wasn't sure what he'd do without him.

))))-((((

"Izaya!" Okay, maybe after having the same fucking fight five-hundred plus times in a row, it got a bit repetitive. Perhaps the fact it still interested him just went to show how boring his was. Happily, Shizuo happened to be trained in the art of not giving a shit. These battles were both the best and worst moments of his life.

Worst, for obvious reasons. Best? Well, he didn't understand it either.

Why was Izaya Orihara, the most feared info broker in Tokyo, here? Shizuo didn't have a clue. His only objective was to make the shitty flea, with all his snide comments and sharp eyes, leave. It was always the same. How the city kept up with them, he'd never know.

"Ah Shizu-chan, a beast as always," Izaya taunted, his lithe body springing into action. Everything Izaya did was always so smooth, every movement employing his entire form. He was liquid at times like this, especially as knives seemed to melt into his hands like mercury. "Did you miss me?" As always, his words wormed their way under Shizuo's skin, heating his blood until it boiled over.

"I miss the peace and quiet of when you're not here!" He roared, hands already moving to grab a convenient trashcan to throw at the flea. It flew through the air between them, too fast for a normal human to dodge.

Izaya wasn't a fucking human though, he was a louse. Ducking, the flea appeared behind Shizuo, knives flashing.

A chill ran down Shizuo's back and he was certain Izaya had very nearly killed him. Pissed, he charged with a yell of, "I'm gonna kill you Izaya!"

Izaya dodged, the fucker. He always dodged. "Oh Shizu-chan, surely a big, strong Alpha like yourself should be able to keep your temper in check." Shizuo growled in anger, he hated when Izaya threw that rank around like it meant something.

Taking a moment's respite, Izaya stood on a vending machine and taunted, "What, are words just too hard for your tiny brain to comprehend?" Shizuo knocked the vending machine out from under the informant.

"Shut up you shitty flea!" he yelled, losing his cigarette in the process. That only served to annoy him further. Like the fuckng flea he was, Izaya landed softly on the pavement, unfazed by Shizuo's rage. He hated how nothing he did ever affected Izaya.

"I've told you to keep the hell out of my city a million times!" Shizuo wasn't sure why he still yelled those words every time he saw Izaya, because he got agitated whenever the flea wasn't around. To distract himself from shit he didn't understand, Shizuo ripped a sign out of the pavement and hurled it at Izaya.

Izaya cackled as he ducked to the side. "Shizu-chan, it's not your city." There was a telltale crash and the street sign found a new home in someone's window. Shizuo didn't even bother to pay attention anymore, Izaya took up the entire scene whenever he was present. "Besides, you're so much fun to play with!"

The feeling is probably mutual. "This isn't a fucking game!" he bellowed instead, scaring the people around him. Even though he was angry, pissed beyond belief, Shizuo felt all the ordinary stress of his day fade into the background. Because Izaya pushed everything else to the side just by breathing the same air as the blond. God I want to kill him.

His blood thundered in his ears as he tore after the raven, the never ending chant of, "Kill, kill, kill," following. Down an alley, out into the sunlight, through a crowd of people, Izaya twirled and cackled, egging him on, goading him into going faster, pushing harder and hating the flea all the more.

Another sign bent under his rage as Shizuo aimed yet another projectile at Izaya. It almost hit him, almost. The people around them were giving the fighting pair a wide berth and Shizuo could guess that it had more to do with than just how volatile they were. Because he was close to rutting, Shizuo was probably giving off a fuck ton of terrifying pheromones. Izaya was the only one who'd ever dare to mess with him.

"Careful Shizu-chan," The raven mocked, simpering. "You might hurt someone." The slippery informant blurred as he slashed at Shizuo with his blade, cutting into his arms. Even though he couldn't feel the pain, Shizuo roared.

Izaya's eyes lit up with a desperate spark, one Shizuo had seen many times before.

"It's all your fault!" He almost managed to catch the bastard as he lunged forward. Suddenly, Izaya's eyes dilated and the raven jerked back, the ease in his movements decreasing abruptly. Before Shizuo could understand the change in Izaya's mood, the informant was already escaping, signaling that the game was over.

"Well Shizu-chan, it's been fun but I-must be going." And then he was gone. Shizuo didn't bother going after Izaya, he knew it wouldn't do him any good. No matter how evenly matched they seemed, Izaya always had control, he always got away when it suited him. It pissed Shizuo off but he couldn't do anything about it.

Someday, he'd end the fight on his own terms.

Pulling out a package of cigarettes, Shizuo waited for his breathing to return to normal, and for the world to stop looking so red. No matter how much he hated Izaya, he loved their fights. Of course Izaya had chosen now, when Shizuo so desperately needed to let off some steam, to vanish. Shizuo lit up and took a drag, watching as the smoke wove through the air.

He probably wouldn't be back until after Shizuo had finished rutting. Fucking bastard, depriving him of his only means of relief. Shizuo had never bothered to find a mate. It wasn't that he didn't want one, it was just he was too terrified that he'd hurt whoever his lover was to really look.

Yet another good thing about Izaya. Shizuo never had to be afraid of hurting the shitty flea. He wasn't quite sure what Izaya's actual ranking was, probably a Beta even though he acted more like an Alpha. Whatever he was, Shizuo loved that he wasn't scared.

Even though he fucking hightails it half the time when I'm rutting. But could Shizuo really blame him, he probably smelled absolutely terrifying. Shaking his head to clear it, Shizuo started to head home. Tom, his boss, never let him work when he was like this, said it scared off the clients although he suspected the pheromones and the twitchiness were the real reason.

For all the control he lacked when it came to his anger, Shizuo had a surprising amount of it elsewhere. Not that many Alpha's had that kind of control over themselves when the irresistible urge to mate struck them. Shizuo had been forced to learn it because he feared the damage he could do if he wasn't careful.

Now, even if he was in the midst of a rut, Shizuo wouldn't jump any Omega he saw. He could actually function. Sure he was irritable as hell and more prone to throwing trash cans at certain fleas but he was almost human.

Izaya would have laughed at that thought.

Everything always led back to the flea, ever since highschool when they'd met. People had started isolating Shizuo at that age, because he was different and because he was dangerous. Only Shinra, a crazy Beta with no sense of self-preservation, had stuck around. Then the doctor to be had started spouting bullshit about one person Shizuo just had to meet. They'd understand each other.

Hah, the only thing they'd understood was a deep and mutual hatred for each other. Although, at this point, Shizuo wasn't sure if they could call it that. Back then though, Izaya had been a reckless loner with what must have been a death wish and Shizuo was an angry recluse who need a safe outlet before he actually killed someone. Izaya had shown up just in the nick of time.

Shizuo stood in the middle of what had been a group of thugs, panting. It had taken everything he had not to kill them. Some of them were Alphas, he could smell it. They'd thought they could beat him but they'd been clearly mistaken. Shizuo was sick of people rushing him just because he was a monster they wanted to take down. What the fuck did they know?

Then he'd heard the slow, sarcastic clap coming from behind him and his rage rose up once more. He spun to find himself staring into the eyes of something evil. Something he had every right to hate. The boy smirked like Shizuo was some animal he found amusing.

"Who the fuck are you?" Shizuo growled, only just noticing Shinra standing next to the newcomer. There was something about the boy that drew his eyes whether he wanted them to be drawn or not.

"Shizuo, this is Izaya Orihara." Shinra looked too fucking happy about this situation, like introducing Izaya to Shizuo was somehow the best thing he could have done. "Remember, I told you about him."

Izaya looked so relaxed, sitting there on the goalpost, loose in comparison to how tightly Shizuo was wound all the time. Like he'd been born to be the blond's opposite. "Hello Shizu-chan, having fun there?" He hissed, malice in those carmine eyes.

Shizuo saw red as he realized that he hated this person. "My name is Shizuo!" He roared, lunging forward, arm raised to punch the damned flea off of his seat. Izaya just dodged, not caring that Shizuo was supposed to be the most dangerous person in the school.

"That's not nice Shizu-chan." Izaya purred gleefully. All Shizuo saw was a flash of silver before pain lanced across his chest. Not much pain, not enough to do more than piss him off more, but there was something about it being him, Izaya, that made it worse.

He wanted to kill this person.

"Did I hurt your feelings?" Izaya simpered, pointing a knife at Shizuo's face tauntingly, as if daring him to attack again. "What are you going to do about it?"

He'd tried to murder Izaya.

From that day forward, all his rage and hatred had been poured into that one person, Izaya. Shizuo got angry at other people, but he wanted to kill the flea. He let himself loose for this one person, for only their fights, and tried to hold it back the rest of the time. If he could just hate Izaya, he could have more control over the rest of his life.

And it had worked, it had fucking worked.

Noticing his cigarette had burned down to the filter and was currently trying to burn his fingers as well, Shizuo swore and dropped it, bringing himself back out of his memories. The return to reality reminded him of the state he was in. Mouth twitching into a snarl, Shizuo cursed his existence as an Alpha once more before making a beeline for his poor excuse for a home.

He'd survive and he'd see Izaya again soon.

Maybe next time, he'd manage to actually kill the bastard…

Shitty flea.

A/N: And ta-da! Second chapter, complete!

I've got a pretty good idea where this is going. It should be good, should be pretty cute. Or something. Just a heads up though, there's going to be at least one more chapter of buildup before something… shall we say, interesting happens.

Until chapter three, bye bye!