Disclaimer: Yu Yu Hakusho belongs to Yoshihiro Togashi, Shonen Jump, FUNimation, etc. However, I do own the idea for this story. Plagiarism will not be tolerated.

Warning(s): If you didn't bother reading the summary, you might not know that this will contain extreme yaoi. Yuusuke/Hiei Also, there will probably be OOC-ness... Gomen ne! To wrap it all up, there's a lemon in the first chapter... Great, ne?

Whoo. Well, I've decided to try my hand at an intense yaoi story. Not a fluffy thing... Intense. Sounds fun, huh? n.n

Please note that this is the first time I'm trying some of these things. (Mainly the lemon.) Basically, this whole story's going to be an experiment and learning experience for me... Yay...?

Don't kill me if it's utterly horrible. o.o; I'm trying...


Blood Curse

A stifled moan escaped the figure as he limped through the forest, one of his clawed hands clutching his stomach while the other groped blindly for something to steady its owner with. The rain cascading down from the heavens caused his normally spiky hair to obey the laws of physics for once, the ebony strands clinging to the sides of his face. The scent of blood radiated from him, though it was dimmed by the water which poured over the land.

The person suddenly stumbled and fell to the ground, the impact electing a yelp from him. He pushed himself to his knees, ignoring the mud that now covered his cloak. He made to stand only to collapse once more when another wave of nausea washed over him as the tightness in his abdomen increased.

But the park was close... And then...

Where could he go? He had no home in the Ningenkai... He had no home at all, come to think of it...

Perhaps... He could find shelter with another member of the Reikai Tantei...

His first choice was Yuusuke. Yuusuke, the half-breed Ma-Zoku that he had claimed as a mate. He would surely help him...

As another groan came from him, he shook his head. No, the hanyou wouldn't be able to understand. Kuwabara, the other ningen, was out of the question, along with the elderly psychic...

...Kurama. The kitsune could help. He'd easily comprehend this without asking too much...

The edge of the forest was now in sight, the human park visible beyond it. And then he would go to Kurama's.

xXx

Kurama's head snapped up, immediately forgetting about the history essay he had been working on. His emerald gaze turned to the window, his acute senses picking up the energy of his comrade, though he couldn't help but notice how a familiar metallic scent clung to him.

Shrugging the matter off, the former Youko stood from his desk chair and made his way to the window, which he unlatched and opened quickly. A few moments later, a drenched and lethargic hiyoukai entered the room, though without his usual grace. In fact, once he had fully gotten inside, his legs shuddered before giving out beneath him.

The fox was instantly at his side, concern for his friend playing in his eyes. "Hiei! What's wrong?"

The other demon could only whimper as he curled up into a fetal position, his arms wrapped securely around his abdomen. Kurama had long since detected that the blood-scent was coming from him, though he could find no wound. Though, judging by his position, it was most likely his stomach that was injured.

Skillfully, as if this wasn't the first time that Hiei had come to him while hurt, the kitsune removed the thick black cloak, finding that there was no trace of the garnet liquid on it. Surely, if the wound was causing him so much pain, there would be mass amounts of blood, right...?

Frowning, Kurama pulled the Jaganshi's shirt up slightly, his eyes widening when he saw not so much as a scratch on the pale skin beneath it. Not even a bruise... Hesitantly, he placed one of his hands on Hiei's torso, though he instantly drew back when he felt how firm and tense the muscles were beneath it. Another whining noise escaped Hiei as he curled up once more, his crimson eyes shut tightly in pain.

It was then that the kitsune noticed how damp his pants seemed to be, and he knew for a fact that it wasn't from the rain.

Kurama tried to push down the unsettling thoughts that were making themselves known in his mind, instead focusing on what he was about to do. This may as well have been classified as violating another's mate, but... Hiei was like a younger brother to him, and he simply had to know... Even though it would confirm his worst fears.

With shaking fingers, the former Youko reached up to the hem of Hiei's pants and began to work them lower. However, once he registered what he was seeing, Kurama lept to his feet and took several steps back, one hand raising up to cover his mouth as he felt the urge to retch.

There was blood streaming down Hiei's legs.

Kurama shook his head slowly, forcing himself to speak. "Hiei... H-How...? W-Why is...?"

"T... The K-Koorime blood..." the hiyoukai replied between gasps. "Because of m-my Koorime blood... this happens... But it's worse than usual... due to their mating s-season taking place now..."

Kurama could only gape at his comrade, nearly unable to comprehend such an absurd situation. But when he thought about it, it did make sense that the genes of the ice maidens would affect him like this, especially during the mating season...

And if the former Youko recalled correctly, the only way to relieve him from the pain...

...would be to mate.

The kitsune groaned before approaching Hiei, once again kneeling down beside him. "Hiei, you have to go to Yuusuke. He's the only one that can help you."

Almost invisibly, the Jaganshi nodded, though as he returned his pants to their original position and tried to stand, he could only take two or three steps before he collapsed against the fox's bed. Kurama stood quickly before he sighed. "I'll drive you to Genkai-san's temple. Yuusuke said that he was spending the night there... Besides, you're in no condition to make it there by yourself."

A quarter of an hour later, Kurama had the hiyoukai wrapped in a thick blanket and in the backseat of his mother's van. (Shiori had long since gone to bed, as it was nearly midnight.) Hurriedly, he backed down the driveway and sped off to the elderly woman's residence, trying to ignore the muffled wails coming from Hiei.

After roughly seven minutes, the kitsune parked the car at the bottom of the seemingly endless flight of stairs that lead to the temple entrance. As quickly as he could, Kurama ran to the back door and lifted the Jaganshi from the seat and into his arms, his actions gentle so as to not harm him any further.

The fox dashed up the steps, reaching the top in a matter of minutes. Paying no attention to the demon-sensing wards that flared slightly upon their arrival, he charged through the doors. He located Yuusuke and Genkai in the arcade, while Yukina was off in her own private bedroom. (This was probably for the better, as Hiei had still refused to tell her that he was in fact the brother she was searching for.)

Kurama began to navigate through the maze-like halls of the temple, following the reiki of the detective. Kicking the arcade doors open with his foot, he ran inside, unable to keep the small amount of panic welling inside of him down. He spotted the raven-haired hanyou over by the janken console, cursing as the game beat him yet again. Kurama hurried over to him, his footfalls drawing his friend's attention away from the screen and to himself instead.

Instantly, Yuusuke's chocolate-colored eyes widened when he took in the Jaganshi's condition. "H-Hiei...! What the hell happened to him, Fox-Boy!"

Kurama winced slightly as he registered the detective's accusing tone. As Genkai came up to them, he explained the situation softly, ignoring the fact that Hiei's talons were imbedding themselves in his chest as the agony increased.

Through all of this, Yuusuke could only gape at him. Once the kitsune had finished, he was the first to speak up. "So... Let me see if I've got this all down right. Right now, Hiei's in major heat because of his Koorime blood, or something, and the only to stop the pain is for us to make love?"

"Hai, Yuusuke-kun... I'm sorry, but it's the-." Kurama started, but the hanyou cut him off.

"What the hell are you apologizing for? You think I'd mind doing this?" he replied, a hentai grin slipping onto his visage. "Besides, if it'll help him, I wouldn't think twice about it."

Slowly, a relieved smile graced Kurama's lips before the elderly psychic next to them spoke up. "Keh, Dimwit. I've got a spare room that you could use. It has a Western-style bed in it, so that might make it... easier."

Yuusuke nodded as he took the whimpering Jaganshi from his friend, having to untangle his claws from Kurama's shirt first. "Whatever you say, 'Grandma'."

xXx

The detective exhaled deeply as the door slid shut behind him. He leaned against it, trying to empty any of the uncertain thoughts from his mind, including Kurama's parting phrase of, "Be extremely careful, Yuusuke."

His gaze wandered over to Hiei, who was curled up on the bed, groaning quietly. He walked over, sitting beside him before he raised a hand to the hiyoukai. Yuusuke began to stroke him on the head as if he were a puppy, laughing softly when Hiei's moans subsided in exchange for a purring noise. "You like that, don't you?"

One of Hiei's crimson orbs peeked open to look up at him as he nudged the detective's hand slightly. His reply was a bit muffled, seeing as most of him was still smothered in the blanket that Kurama had wrapped him in. "...Mmmrh hmrrf."

Yuusuke allowed a small grin to appear on his face before he gently lifted the Jaganshi onto his lap. He fell back to the mattress, holding Hiei close to himself. It was then that he noticed how much his mate seemed to be suffering, judging by the expression on his visage. "...It really hurts, doesn't it?"

Hiei nodded before burying his face in the hanyou's shoulder, finding himself greatly comforted when Yuusuke placed a hand on his tense stomach, the warmth helping the pained area relax a bit. The two sat in silence for several seemingly-endless minutes, Yuusuke's actions focused only on soothing his companion.

After ten minutes had passed, the youth spoke, breaking through the serene moment. "'You ready?" Once he caught Hiei's mumbled reply of 'yes', he sat up, placing the half-Koorime on the bed carefully.

As Yuusuke removed the heavy blanket, he leaned down to his lover's ear, whispering into it. "I'm sorry if I hurt you..."

"...I-It'll be fine. Just get on with it." Hiei muttered while the detective set to work on undressing him, first pulling off the Jaganshi's ripped, sleeveless shirt, followed by slipping his pants off as well.

Yuusuke flinched slightly as the metallic smell hit his nose. Needless to say, the sight of the blood coating Hiei's legs unnerved him, though he brushed the matter away as he took off his own clothes.

A few seconds later, the two were kissing each other fervently, their tongues battling for dominance while Yuusuke pressed himself against the hiyoukai. Hiei moaned softly as his mate broke away, choosing instead to move to the Jaganshi's ear, where he proceeded to nibble and tug at it with his teeth. Occasionally, his tongue would swirl over the flesh.

As Hiei continued to whine, Yuusuke started to lick his stomach, sending him into lustful spasms. One of his hands wrapped around Hiei's erection, which he began to massage, and the half-Koorime gasped softly in pleasure. Not soon after, the hanyou lowered his mouth to the other's thickness and sucked on it gently, though Hiei yelped loudly, the sound filled with longing while he bucked wildly beneath Yuusuke.

The youth sucked harder, leading to Hiei releasing into his mouth. Yuusuke swallowed the rather salty liquid hurriedly before moving his lips back to kiss the youkai. His actions were driven by pure lust, his chocolate-eyes glowing with passion.

Hiei gripped his lover tightly, unable to hide the fact that he was shuddering. "N-Now."

Yuusuke paused in his act of trailing kisses along the other's collarbone. "...'You sure?"

The Jaganshi nodded and parted his legs, his garnet-colored eyes hidden beneath half-closed lids. Carefully, and almost hesitantly, Yuusuke slid his hardened length into his lover's opening, moving slowly so as to not harm him. (Not to mention that by taking his time, he was giving Hiei the most amount of pleasure possible.)

Hiei's back arched, a lust-filled moan erupting past his lips as the hanyou began to thrust himself in and out, though he held back as he heard the whimpering coming from his mate.

However, the hiyoukai spoke again, this time with a pleading tone in his voice. It was obvious that he was overwhelmed with the delightful feeling. "...H-Harder... Faster, Y-Yuusuke..."

The detective bit his lip before tentatively complying, gradually increasing the speed and intensity of his actions. He nearly faltered when Hiei screamed his name, though he pulled himself together and continued.

Eventually, Yuusuke paused to release into the Jaganshi. The white, hot fluid spilled down his shaft, dripping down his legs. As the heated liquid filled him, Hiei let out another moan, though this time louder than before.

After several moments, Yuusuke extracted himself from his mate before collapsing on top of him. His raven-colored bangs clung to his face with sweat while his eyes closed. "D... Did I hurt you?"

"Hn... No." Hiei murmured while curling up underneath the hanyou, his crimson orbs shutting as well. "...You could never..."

They were silent for a few minutes, giving the appearance that they were sleeping already. Yet that illusion was broken when Hiei spoke once more. "...Yuusuke?"

"...Yeah, Firefly?" the youth replied, trying his best to conceal a yawn.

A small, fleeting smile flickered upon the youkai's visage at the use of the nickname, though it disappeared as soon as it had come. "Hn. ...Thanks." He frowned slightly; the word had seemed foreign coming from himself.

"No problem. Any time, you know?" Yuusuke's voice was laden with a bit of a hentai tone, but it vanished with his next words. "You know that I love you, right?"

Hiei didn't have a chance to respond to this, though with good reason; he had fallen asleep moments before. Yuusuke grinned at this while his fingers entwined themselves in the Jaganshi's ebony hair, soon letting the bliss of his dreams claim him as well.


Ending Notes: ...Wow. I can't believe I actually wrote that. o.o; It must've been confusing, no doubt... Especially the lemon, seeing as it was the first time I wrote one. n.n; I hope that a few people liked it... I know that I enjoyed writing it!

I still can't decide if I'm going to continue this, or leave is as a one-shot. I have a plot for the longer version, though things will most certainly become more twisted.

Tell me what you think in a review, ne? Ja'!