This is something me and my friend's fanfiction. We decided to write this after watching her new box set of YuYu Hakusho. It's a joint thing. Hope you enjoy, and don't forget to review.

Yusuke Urameshi let out a whoop as he left the school halls. "Summer is almost here and that means we're almost free from school!" He walked with a joyous bounce to his step.

"Man, it feels like it's never gonna get here," Kuwabara sighed in exaggeration.

Hiei looked away in disgust. "You annoying ningens are giving me a headache." He was the only one not in uniform, and was only there because of Koenma.

"Leave them be, they've a right to celebrate from all that school work." Kurama, wearing a maroon uniform said.

"Yeah Hiei, don't get your panties in a twist," Yusuke laughed. Kuwabara guffawed.

"Shut up, detective." Hiei growled lowly.

A loud and resounding pop sounded to Yusuke's left causing him jumped a foot in the air. A light airy giggle sounded and Botan greeted them in a cheery voice.

"Hi guys!" giggle

"Geeze, Botan, you trying to give me a heart attack?" Yusuke breathed out exasperated.

Botan girnned. "Oh Yusuke, 'course not! Anyways, Koenma has a new assignment for you and he says it's urgent." They all made annoyed groans and grunts but none the less followed her through the opened portal.

In Rekai

"What's binky breath giving us this time?" Yusuke muttered.

"It'd better be good because I have better things to do than waste my time with you worth less ningens." Hiei spat.

"What other things?" Kurama asked. "Sleeping in a tree perhaps?"

Hiei glared dangerously.

A crashing sound came from Koenma's office. "No ogre, not baloney, ham!"

Botan interrupted his fit by knocking and announcing "The boys are here, Sir." And one by one they all filed in.

"What's the new mission, binky breath?"

"Don't call me that Yusuke! I DEMAND respect from YOU" Koenma bellowed from on top of his desk.

"And just who are you to 'demand' somthin' from me ya little brat!" Yusuke questioned tiredly

"SHUT IT YUSUKE!" Botan bellowed, summoned her oar and waved it around in a threatening manner.

Ahem! "Thank you Botan, now, by the way, you all know that many demons have been trying to open the portal from here to demon world."

Yusuke rolled his eyes. "WELL DUH! WE ARE THE ONE WHO ALWAYZ stop those bastard demons anyway, so OF COURSE We know that already diaper brains!"

"Yusuke, be quiet! We just found another one of the many demons who might be behind opening the portals. Now, if you'll look at the screen, this is where you're going."

"Osaka? You're giving us a vacation? ALRIGHT!!" cheered Kuwabara.

"No BAKKA! Osaka is where your target is!" Koenma stated irritatedly.

"But I can still go sightseeing right? I can even get my beloved Yukina a present." Kuwabara asked

"Hn, like she'd even take anything from a buffoon like you." Hiei scoffed.

"Hey, what'd you say, shrimp?" Kuwabara hollered.

"I suppose you're deaf too then?" Hiei commented in an unconcerned voice.

"HEY!!! take that back SHRIMP!"

"SILENCE!" Koenma's baby voice rang out through the argument. Ahem! "NOW, As I was saying," he clicked a small button, "your target is the family out here in Osaka. They're going by the name, Makoto, and are disguising themselves as humans."

"Wait a sec, as human? But why? I mean, if the demons hate us so much, why pretend to look like us let alone be like us?" Yusuke questioned.

"I don't know! Just get over there and arrest them." Koenma stated irritatedly.

Hiei emerged from the shadows. "I suppose you won't need me. This task can be handled by these two fools."

"Wait Hiei," Koenma called. "This mission is harder than it looks, and Yusuke will need you with him." Koenma paused, "that is of course, I have an open cell with your name on it open for you if you ever need some time to think a few things over for a couple of decades."

"Hn, fine."

Outside the Makoto House

Yusuke's eyes widened at the immense size of this house. It wasn't really even a house, it was a Mansion. He whistled in appreciation. "Whoa, this place is HUGE" He turned around when no one said anything. "What? Don't you guys think so?"

Kuwabara was staring at the house. "Urameshi, I feel human spirit energy in there."

"What?"

Kurama nodded. "Yes, there are mainly minor demons in the house, and they couldn't be the Makoto family. I detect only one presence of a demon worth any threat."

"Wait, so you're saying that-"

"That they're ningens, you fool," Hiei stated in a flat voice. "The Makoto family wasn't pretendingto be human, they are human the fools can't ever get their information straight." Hiei scoffed.

"Urameshi, we can't kill them if they're human, it's just…not right."

"Obviously, you moron, we-" The ground underneath their feet slid back and forth, a crack splitting the earth, and a roaring sound coming from the mansion. The spirit detectives tried to find their footing and glanced in alarm at the Matako house.

Pada,pada, pada, pada.

Their heads swung to the wrought iron gate in front of the house, and the screech as it burst open. A small black blur hurtled towards the group, and still unsteady on their feet, they couldn't react. Her face screamed panic right before knocking into Hiei. The pair tumbled to the ground, Hiei underneath the small figure with deep black hair.

A growl rose from him. "Get off of me, you-"

"Hiei!" Kurama shouted to warn him of what he sensed, but it was too late. An immense explosion threw him and the small girl ten feet away, causing them to hit concrete hard. Blood dribbled from the young woman's mouth, and Hiei's head had a lump that looked unnatural.

"What the hell just happened!?" exclaimed Yusuke.

Kurama's brow creased and he bent down to inspect the fallen two.

"Don't you dare touch her!" A frantic person yelled in a voice laced with panic. The redhead looked up, only to meet with a booted foot straight in the face. He fell to the ground with a thump.

"Kurama!" Yusuke yelled in shock. He raised a hand in a swift motion and pointed his Spirit Gun at the newcomer's back, inspecting him or her. The demon wore an encompassing cloak that hid her face and figure in the dark.

A feral growl emitted from the cloaked figure's throat. "You get near me and I'll do to you what I did to him." Her voice was definitely feminine.

"Yeah right, you're cornered lady," Yusuke commented in a harsh voice.

"You can't hold me forever, and when she wakes up, you won't be able to stop us." She slid into a fighting stance.

Behind her, Kurama stirred, groaning quietly. The black demon tensed, prepared to jump Yusuke but then she heard the stirring behind her. In that split second Yusuke slugged her over the head. She fell to the floor.

Kuwabara's eyes widened. "You hit her! You can't hit a girl!"

"Kuwabara shut up."

Kurama looked at the mess they had made. "I believe we need a place to recuperate and," he rubbed the side of his head where the boot had hit him, "we need to figure out what we're dealing with.

Pulling out his communicator, Yusuke called to Botan. "Hello Yusuke! Have you finished the mission already?"

"No, Botan, we need to get to Genkai's temple to get these people fixed up. Diaper brains screwed up this one. The Makoto's are humans, not demons."

"Oh my! Explain on the way." She appeared instantly and opened a portal to Genkai's. Right before they stepped through, a large gust of wind stirred up and blew past them, colored slightly darker than normal.

Genkai's temple

The dark female demon moaned as she woke. She had a pounding headache and her muscles felt stiff. Her black cloak still surrounded her. Then it all came back to her: the argument, the escape, the fight that she had almost lost, and the strange group of three human boys and a demon outside the mansion.

"Oh good you're awake!" A young girl with aqua colored hair and crimson eyes smiled brightly.

"Where am I?" She croaked.

"You were really hurt. Your arm was broken and there was a shallow cut down your ribs. I fixed it up as best I could."

The demon blinked. She had healed her? "Thank you." Her voice sounded unused and hoarse.

"Hey, now that you're awake, tell me what the hell is happening." Her startled gaze fell on the greasy-haired boy that had knocked her out.

"And why should I do that?" She asked in an angered growl.

"Because, I have a Makoto girl in the other room and I won't let her go unless you give me answers."

She paused for a second, debating how much to tell him. "My name is Ryoko."

The aqua-haired girl stood. "I'm sorry, you reminded me about the other girl here, and I should go check up on her."

Ryoko smiled as she watched the girl exit. This was her chance to escape. She sat up and started undoing the tie in her cloak.

The boy was getting impatient with her silence. "Well? Go on, I want to know more than your name." He glanced out the window when he heard a twig snap just below the window.

Look at me you idiot child! she thought heatedly. "I'd like to know your name first."

He rolled his eyes. "Yusuke," he stated simply.

"Yusuke, I'd appreciate it if you looked at me." Her eyes, black rimmed silver, were beginning to glow. He looked up, sensing a rising in her energy. She was standing now, the black cloak pooled into a pile behind her. Her long, blue streaked, black hair was left down, swinging down to her waist. Her black tail twitched and her blue tipped ears flickered to and fro. The neko demon's skin was milky white and her porcelain-like features were captivating.

Bad move, little boy. She flashed a smile at him. "Don't you think it's too cramped in here? I'd like a bit of fresh air."

"I don't think so lady, you're-" She had stopped a few inches from his face, and her silver eyes were making him dazed and disoriented. Her face shone in the light, her lips seemed impossibly red and full. There seemed to be a soft glow surrounding her. "Yeah, we should go outside, this room doesn't suit you."

Ryoko's smile turned into a grin. Her charm, as a neko, always worked wonders on males. "I thought you might agree. On second thought though, could you stay here? I need some alone time."

Yusuke's eyes were glazed over, his thoughts muddled. "Of course, of course, anything for you." Two seconds later, he had wrapped his arms around her and was staring at her with love struck eyes.

She wrinkled her nose in disgust and pushed him away, causing him to fall on the ground with a thud. Ryoko laughed and stepped over his unconscious form. She snuck through the house but couldn't find any presence of the girl from the Makoto family. They had probably hidden her so that she couldn't escape.

Outside, Ryoko breathed in the fresh air in relief. She had never done well indoors. Taking a sniff of the air, she caught a whiff of a very good friend. With this good news, she stretched her arms and out into the air, arching her back like the cat that she was.

"Hey!" she called out to the empty air, "I'll need your help." A rustle of wind that wound around her legs told her that the wind master heard her. Another sound to her left made one of her blue black ears flick to the side. Footsteps came around the side of the temple building. "Who are you?" she asked with narrowed eyes. Her senses told her he was a human, but his spirit energy was higher than most average ningens.

"I should ask the same thing." The human came into her sight and Ryoko looked him over, trying to decide if he was much of a threat, not remembering that he had been one of the young men at the Makoto house. He had red hair, brilliant green eyes, and held a blooming rose in his hand. The scent of roses surrounded him.

Kurama rounded the side of the building and found a cat apparition standing in front of the temple. He was taken aback by her loveliness.

A whispering voice sprang up in his mind. It was silky and smooth, with a growling undertone. Look at how well her skin shines in the light, Kurama, how she has lovely curving hips and long longlegs.

Kurama winced but did not respond to the Spirit Fox. The words were distracting and highly inappropriate. "What are you doing here?" he demanded.

"Admiring the scenery," she replied in an offhand voice.

Kurama neared her slowly, ignoring the alluring swish of her tail or the way her silver eyes sparkled in the sun.

"Why would a demon come to admire the forest outside of Genkai's temple, especially with Yusuke Urameshi, the spirit detective, inside?"

Ryoko's eyes widened. That boy in there was THE Yusuke? she thought in shock. "I've been known to take risks." She kept her voice purposefully neutral.

Kurama was now close enough to notice how her silver eyes were rimmed in black, "Tell me who you really are."

Ryoko's face was composed into an innocent mask. Kurama came closer One…two steps…she stilled completely, waiting for him to get close enough for her power of seduction to latch onto him. Three…Four steps…He still wasn't close enough Five…Gotcha! She grinned to herself. "Well, I came for a bit of an adventure." Her voice was low as she spoke; she waited for his eyes to haze over.

Suichii, do you feel that? She's trying to SEDUCE us! Kurama could feel Yoko's delighted grin widen. This will be highly entertaining as you and I are immune to any such tactics because of my fox blood.

Ryoko was puzzled when the red head did not become dazed. Perhaps she was getting rusty. She softened her expression and parted her lips, causing a rosy color to come to her cheeks. "Of course you would understand that, being an adventurous soul as well. Am I correct?" She ran her hand through her exotic hair, and then trailed a finger down his arm. Any minute now, she thought in anticipation. His eyes would be overcome with lust. But his expression was unnerving, calm, and unaffected.

Yoko's rumbling chuckle echoed in Kurama's head. Let's give her a show Suichii.

No Yoko. Kurama commanded, but was too late. The Spirit fox had made up his mind. Kurama could feel Yoko bleed into his own thoughts and take control of his words causing Kurama to ­­­­­­­­­­­­­­­retreat into the back of his mind. A sly smirk spread onto the red heads face. "If you've come for an adventure, then you're in the right place." His voice was deeper, smother, huskier, and was no longer Kurama's vocals, but Yoko's. He took his hand from his pocket and placed it under her chin then took his silken rose and placed it delicately into her hair.

SCORE, Ryoko thought. The lust was in his eyes and his touch was possessive. She swished her tail and looked up at him from lowered lashes. She ran her fingers through his fiery hair, and then wrapped her hands around his neck. "We are two of a kind and adventurers should look out for each other."

Kurama grabbed the hand that was venturing into his hair and placed a kiss on her knuckles, lingering long enough for his brilliant green eyes to catch and hold her.

Ryoko's face heated up. His touch sent a shiver up her arm. Why is he affecting me!? Kurama let her hand go but the tingling sensation did not fade.

He bent forward to whisper in her ear, his breath tickling her. "Koi, we are no more alike than sun and moon."

Ryoko blinked. What!? He should only be able to slobber over me by now. The red heads grin was feral. "You want to know why? Because, my dear, it is you that has been caught in my spell." He growled huskily with his face inches from hers, bending down slowly. Ryoko could feel his breathing brush her face. She lifted her own lips in anticipation, forgetting his words completely.

"Kurama!" Yusuke stood by the temple entrance. "Don't let her escape!"

Kurama's eye's widened and Yoko retreated inside him again, bringing Kurama's senses back. He quickly pulled the rose from her hair. "Rose Whip!"

Ryoko, still a little confused, couldn't react in time and the vine wrapped around her. The rose thorns pierced her skin and made her cry out once in surprise. Kurama stepped away from her, still a little confused himself about what had just happened.

"You bastard! You tricked me! You seduced me!" She hissed and spit, struggling against the vine and gaining more cuts in the process.

"That's a hypocritical thing to say, considering the fact that you tried to do the same to me," Kurama told her quietly.

She growled and tore the vine away from herself.

Yusuke ran over and pointed his Spirit Gun at her, preventing her escape. "Good, you got her. She's that demon under the cape. I was talking to her inside but she got away."

"How could she have gotten away, you were in the room with her correct?"

"The idiot brat was easy enough to seduce into submission," she spat out.

Yusuke made an outraged noise and put up his fists to attack her. Kurama frowned and stood between them. "There isn't any need for more violence. She's been caught and won't be escaping anytime soon."

She hissed in fury and glared at Kurama's back. Her tail lashed out. "Your death will be slow," she told Kurama in a deadly voice.

"What did you do to her?" Yusuke asked.

Kurama reddened. "Nothing. Help me bring her into the house."

Back in Genkai's temple

Yusuke, and Kurama stood around the cat demon. She sat chained to a chair. Genkai stood at the doorway. "Explain yourself," Yusuke demanded.

"What will you do to her if I don't?" Ryoko asked. She knew when she was cornered and the only thing now to do was negotiate.

"We will turn her into Koenma, and being part of the Makoto family, he will lock her in jail," Genkai said in a harsh voice.

Ryoko's lip twisted in a snarl but she didn't fight. "Fine, but if I tell, then you can't take her away. She's an innocent in this and doesn't belong in that family."

Kurama raised an eyebrow, curious. "Agreed."

"The girl that you've imprisoned," she emphasized the last word, "She's Saya Makoto, only daughter to Hiko Makoto. The day you found her, she was trying to escape the family and all of its problems. She has had…certain loyalties since she was young that made her disgraceful in the eyes of her family"

"Certain loyalties?" Yusuke asked.

"The Makoto's have a belief that they are an "enlightened" bloodline of humans. They want to get rid of all the rest of humanity since they believe no one else is "enlightened." The only other people they agree with are demons since most of them do the family's bidding."

" 'Enlightened'?" Genkai scowled. "What a load of bull! And they think these demons actually believe in these idiot plan?"

Ryoko shrugged. "The demons get a profit out of it."

"What kind of profit."

Ryoko sighed. This last bit might sentence Saya to imprisonment, but they wouldn't do that, they promised. "They are opening a portal to demon world so that the demons can kill every single human who is not of the Makoto line."

Genkai's look was incredulous. "The demons will kill them as well! What makes them so enlightened anyway?"

"Heart's blood the size of a brick."

"What?" Kurama and Genkai exclaimed at the same time.

"What in the hell is heart's blood," Yusuke asked.

Genkai gave him a heated glance. "Dimwit. Heart's blood is a drop of a blood from a demon, most often a dragon. It's the last drop and the strongest."

"That still doesn't add up, grandma. How can a drop of blood be that big? Maybe a puddle, but not a drop."

Genkai glared at his ignorance. "Heart's blood is a solid object, looking like a ruby most often. One that size is a rarity. Most heart's blood is the size of a drop of blood and usually can't be detected. It gives immense powers to whoever has it. A drop that large is mostly unheard of."

Ryoko nodded. "About 100 years ago, a Makoto ancestor was given a wolf demon's heart's blood by his sister. She had taken it in his dying hour as revenge, and given it to the Makoto man as a reward for something he had done. She told him it could enhance their power to incredible heights, but advised the man never to touch it since it would probably kill him. He was power hungry and ignored her. When he touched it something amazing happened. A piece of the heart's blood merged with him so that forever after, all his descendants would have a single drop of wolf demon blood."

"So they're hanyou?" Yusuke asked.

"No," Ryoko replied, guilty that she had revealed secrets she had sworn to keep. "They are no where near half-demon. They have just a drop, enough to make them incredibly powerful, but they could never be considered demon."

"What were Saya's loyalties? And how do you fall into this story?" Kurama asked.

"Could you take these chains off?" Kurama gave her an uneasy glance. "I won't escape if that's what you're worrying about. I can't now that you know about the family, and I want you to know why Saya isn't like those fools."

They removed her chains and she settled herself more comfortably, causing Kurama to look away from her.

Ryoko continued. "Saya hates all manner of demons, to the point that she would attempt to wipe us all out. She thinks demons are power hungry and disgustingly attached to slaughter, much like her own family. There are only two exceptions to her belief. I am one of them. I was employed to be her protector when she was born and have been with her throughout her life."

Her expression turned dark. Her eyes burned with shame and anger. "She tried to escape that day that you caught us. But to defy a Makoto is suicide and they go through with their thoughts with a vengeance. Each member of the family has a piece of the heart's blood, but it's not only a family heirloom. If any of the Makoto bloodline tries to betray them, it will enact a spell to kill the wearer from the inside out." Ryoko clenched her fist in anger and her claws pierced her skin.

"But she's alive," Yusuke commented.

"She has always been stronger than the family thought, and your friend came in contact with her. It made the spell go wrong, but that doesn't mean she still won't die. Even though I can't sense where she is, I can feel her life fading slowly."

"But then that means Hiei will-"

"You guys!" Kuwabara's voice interrupted their conversation. Everyone looked up. Yusuke and Kurama ran to the voice. Ryoko, eyes wide, followed.

Kuwabara stood in the room, his Spirit Sword flaring out. On the bed lay Hiei and Saya, both breathing shallowly. A demon stood in front of Kurama. His layered jaw length black hair was tipped white and a few stray strands fell into his cloudy grey eyes. He stood at 6 foot 5 with broad shoulders and a muscled body. A plumed, dog tail hung behind him and his angered snarl showed sharp canine teeth. His face was strongly structured with well-defined cheek bones. He hovered a few feet off the ground and huge gust of wind swirled around the room. Several sharp objects in the room were pointed strait at Kuwabara.

"I am not fond of killing, but if you don't let me take the girl, your death will be excruciating." He flipped a large hand and a pen stuck itself into Kuwabara's arm.