A/N: Here's my new fanfiction! Let me know what you think in a review!!!

Vampire Knight – Immoral Love

–Chapter 1—

The bedroom was dark and cold, any normal person would shy away from a room as depressing as this one. A girl sat on the huge four-poster bed, the soft silk curtains pulled away, allowing the moonlight to pour in like sad silver tears coating across the girl's nightdress. Her knees were drawn close to her chest, her arms wrapped tightly around her thin legs. Her long brown hair was strewn carelessly around her chin. Her eyes glistened, the moonlight reflecting off of her unshed tears. She bit her lip feverishly until she tasted blood.

Red flashed.

She felt the pain, the urge of a vampire's thirst. It made her feel weak, yet strengthened at the same time. She looked out of the huge bay windows beside her bed and wondered when he would return. It had been two weeks, far too long for her tastes. The pain of loneliness was pushing her heart against her ribs painfully.

"Onii-sama…"

The tone of her voice floats around in the silence until it finally quiets. She realized then that the solitude was devouring her resolve.

After an hour or so of allowing her mind to wander, she hears a tink, tink, tink at one of the bay windows. Her head raises slightly from her knees and she sees a figure standing in her room. His hair is covered in white snow and his trench coat floats lazily with the breeze. His eyes capture her attention, they are blood red.

Exhilaration rocks her to the core and her cold heart becomes immediately scorching. She untwines her limbs and kneels on her bed to look over at him, the blood in her body pumping ferociously.

"I'm home," he says finally, his red eyes betraying his calm demeanor.

"Onii-sama."

He doesn't resist, he doesn't hesitate, he just takes her in his arms, pressing her against the mattress.

She can smell it, the blood coursing through his veins. She presses her cheek against his neck, taking in the scent of his pumping life force.

"It's been far too long, Yuuki," he murmurs, his red eyes becoming wide and wild with need. She doesn't waver or vacillate to expose her neck, pulling her nightdress down her shoulder to give him better access.

She's amazed at how gentle his bite is, as compared to her violent feeding methods. She feels a familiar pleasure ripple up her spine as he gently pulls the scarlet liquid from her neck.

"Ka…Kaname," she moans, and after a moment he gently pulls away, hovering over her. His warm eyes return to their brownish-red hue and his lips turn into a soft smile. He wipes the stream of blood from his chin and pulls his wet trench-coat off of his broad shoulders.

"Take it, my precious Yuuki, for my blood is for you only."

She can feel the thirst twisting through her body. Her throat dries and burns with desire as she positions him so that she is straddling his body, her chest resting atop his, her mouth against the nape of his neck. The pain is almost unbearable, but she pulls away, her heart crushing beneath the weight of her guilt.

"I… I can't… Onii-sama…" she cries, and tears form in the corners of her eyes. "I…"

He looks at her with an expression mirroring sympathy and devotion.

"My dear sister can't even bear to have her beautiful fangs in her own brother's neck?"

"I can't… do it to you," she said, her red eyes the only thing visible in the room. "I'm afraid."

"It's who you are, Yuuki-chan," he said. "This method is taught to tiny children, if you don't learn to get the blood for yourself you will never become truly independent as an adult, but always forced to rely on others to get the blood for you, you will remain as helpless as a little girl."

Her eyes closed tightly shut and she shook her head feverishly, fighting the overpowering thirst in her body.

"Please… Nii-sama," she begged. Her brows furrowed together, framing her red eyes in desperation.

He looks down at her, his expression mirroring worry and sympathy. After a moment of hesitation he pulls his hand up to his lips and the moonlight reflects off his vampire fangs as he sinks them unflinchingly into his wrist. The blood pumps silently from his wrist and down his long fingers until they drip onto the satin sheets of the bed.

She begins heaving uncontrollably as the scent reaches her nose. She doesn't hesitate to reach for his outstretched hand and lick the flowing blood from his fingers. She then covers the two tiny holes his fangs created with her lips, quenching her thirst.

"My innocent baby sister," he whispers, watching as her lips draw out the blood from his wrist. "I am eternally powerless against you."

She pulls away and he wipes the scarlet liquid from her pale lips. "Forgive me," she murmurs, sinking against his body, her torso form-fitting to his own as he pulled her into an embrace.

"What has Yuuki done that would necessitate my forgiveness?" he asks gently, staring at the ceiling as she snuggles into his chest.

"I am a weak person."

"Weak?"

"I cannot bring myself to pierce your flesh, yet I can't survive without your blood."

Silence surrounded them as he considered her words, after a moment he spoke. "You are not weak for wanting the blood of your love," he said, kissing her lips affectionately, "I only worry what would happen if something was to happen to me, would you be able to survive?"

She looked back at him, her eyes wide with shock. "Don't say that!" she stammered, her heart banging in her chest. "Nothing will ever happen to you!"

"I meant in theory, love."

She looked away. "I wouldn't want to survive without you."

He smiled tenderly at her and kissed the crease between her brows.

She unbuttoned the first button of his shirt by his collar. "Onii-sama, will you stay with me tonight?"

Kaname leaned over and rested his head atop one of the pillows. "I will be wherever you want me."

She breathed a sigh of relief and snuggled into his chest After a few moments the exhaustion overtook her and she fell into a deep relaxing slumber.

xVxKx

Yuuki woke up the next morning, the room shrouded in darkness where the heavy curtains had been pulled to block out the bright sun. She reached out and flattened her palm against the spot where Kaname had slept. It was still warm from his body.

"Kaname…" she murmurs, her fingers twisting in the soft fabric.

"Ohayo, Yuuki."

She looks up, and there he is, leaning against the wall, watching her. He is wearing a different change of clothes and his hair is wet from a shower.

"O…Ohayo, Kaname" she replies, wishing her older brother a good morning.

The sound of his name on her lips made him smile warmly. He walked over to her bed, sitting beside her on the crumpled sheets.

"Tell me about your trip," she requested, as the sound of birds chirping outside made her feel imprisoned.

He looked out towards the covered window. "I went to speak with one of our distant relatives Akito Ganzo, to see if he would be the Kuran family's ally, should the need ever arise."

She cocked her head to the side. "An ally of the Kuran family?"

He nodded. "Yuuki, you and I are the only remaining members of the Kuran clan since the death of Rido," he said. "The fate of the most powerful clan in the history of the vampire race rests in our hands."

"So did Ganzo-san accept our offer of diplomacy?" Yuuki asked.

"He accepted, though not too easily." he explained, cupping her cheek. "That's the extent of what you need to know,"

She looked away. "You treat me like a child."

He rested his hand atop her head as he had so many times when they were younger. "Only because I wish to protect you from the horrors of a vampire's life."

"I don't understand," she said, her head falling.

"Which confirms that my plan is successful," he said gently, pushing a lock of her hair behind her ear. "The less you understand, the better."

"I don't need to be protected from who I am, Kaname."

His face became less gentle, his smile turning into a frown and his eyes darkening. "Yuuki, there are things that I experienced this week that I would never in all my life want you to witness."

She looked away. "I want to go with you, next time."

He smiled warmly. "Did Yuuki-chan, perchance miss her Nii-sama?"

She looked up at him, her eyes wide and full of emotion. "What kind of question is that? Didn't you see me last night?" she asked incredulously. She reminisced of how she had unabashedly sucked the blood from his wrist.

"It makes me happy that you missed me, but if you needed to quench your thirst so desperately, why didn't you use any of the blood tablets I left for you?" he asked.

She looked at the box resting atop her nightstand and turned away ashamedly.

"I…I'd rather have…"

He smiled pitifully. "Yuuki…"

"I'm a pathetic vampire, aren't I?" she asked, wiping a single tear from her cheek. "I can't… be satisfied…"

"If it makes you more comfortable while I'm away, I'll assign someone to help… satiate your thirst."

She looked up, her eyes wide with horror. "No! I couldn't…" she said, looking away. "Besides, it's not their blood… I thirst for."

"Yuuki…"

She looked up at him to see him smiling tenderly.

"What?"

He chuckled. "There's times when you seem completely matured, and then there are other moments where I swear I see the tiny helpless little girl who used to cling to my pant leg to keep me from leaving."

"I'm sorry, Onii-sama," she said looking away. "I don't deserve you."

"Don't speak such foolishness," he said, "We were created for each other."

She looked up at him as silence fell upon them. "How do you do it?"

He leaned his head to the side confusingly. "How do I do what?"

"How do you… resist… for so long?" she asked.

He smiled warmly at her. "I've had sufficient practice."

She stared at the sheets of her bed. He had been forced to watch her from a distance for ten years after her memory had been erased, and her vampire side sealed away. So many years he had been forced to live without the only blood that would fully satisfy him, her blood. Yet he had still remained close by to her, always watching over her, always protecting her.

"Onii-sama… When are you leaving?" she asked, looking up at him.

He turned away. "I'm leaving tonight."

"How long will you be gone?"

He crossed his ankles. "A few days, perhaps."

"Then please, take me with you."

"That is out of the question," he told her, his eyes becoming serious.

"I can help you! If our potential allies see that the powerful Kuran clan has reformed, perhaps they will be convinced to join us."

He looked away and she knew that he saw the wisdom in what she had suggested, two pure-blooded Kurans were better than just one, but his protective side was fighting an inner battle with that wisdom.

"Kaname…" she began, reaching her arms out and taking a fistful of his shirt. "I feel so alone, all the time…"

His eyes widened in surprise. "But what about Aidou-san, Shiki-san, Rima-san, Akatsuki-san, Ru—"

"You know what I mean!" she stammered, beating her fist against his chest. "I need you!"

"Hush," he crooned, taking her fist in his hand and carefully untwining her tight fingers.

"Don't leave me alone," she said, burying her head into his shoulder. "Please… Kaname…" she begged.

He held her closely against his torso, his eyes distant, as if he was thinking deeply. After a moment or two he chuckled and brushed her brown hair out of her eyes. "I've just never been able to say no to you, have I?"

She flashed back to a moment when she was younger. A moment that occurred over ten years ago.

Fear struck Yuuki to the core. She was sitting up in her bed, her heart beating violently in her chest. The darkness of the windowless room was suffocating.

She exited out of her bedroom and snuck silently up the stairs of her parent's mansion, trying her best not to make any noise. Her tiny palm was shaking uncontrollably when she reached her destination. She didn't knock or cry out, she merely placed her little hand onto the large gold knob and turned it, relief flowing through her when it opened effortlessly.

"Nii-sama?" she whispered, as she walked over to the large water bed. When he didn't respond she pulled herself onto the bed, her weight pressing lightly onto the bed, water rushed around her.

"Nii-sama?" she called again, this time reaching her hand out to touch her brother's cheek.

His eyes snapped open, and a bolt of surprise registered in Yuuki's mind. He sat up straight, putting his arms around Yuuki's body protectively as he searched the room for potential threats.

"Nii—"

His breath was coming in heaves and she could feel his heart beating wildly against her cheek.

"Yuuki-chan, are you alright?" he asked, cupping her chin in his big hands.

"Nii-sama… I had a scary dream…" she murmured. Hiding her face in the expanse of her brother's chest. After a moment of realization he took her into his arms.

"I'm sorry, little one," he comforted, brushing his fingers through her messy brown hair.

"Can I sleep with you, Nii-sama?" she begged, turning to rest her head on his pillow. He looked down at her lovingly.

"You know that Otou-sama and Okaa-sama doesn't want Yuuki-chan to be out of the safety of her bedroom," he said, looking down at the little girl who closed her eyes in pretend sleep.

"We won't tell Otou-sama and Okaa-sama," she offered, opening her eyes and looking up at him pleadingly. "I can keep a secret."

"What if I was to come back to your room?" he asked, cupping her cheek.

"I like Nii-sama's bed," she said snuggling into the blankets. "It's always warm."

He smiled down at her and laid down so that he was facing her, their eyes connected and she smiled childishly. He returned her grin.

"Do you know, that there will come a time when Nii-sama and Yuuki-chan are like Otou-sama and Okaa-sama?"

"Really?" she asked, her eyes wide with pleasure.

He nodded. "If Yuuki wants that."

"I want it, very much!" she said, snuggling against her brother's shoulder. He leaned down and kissed her forehead softly.

"Now go to sleep, little one," he ordered. "I will fight the scary dreams away for you."

Yuuki looked up at her brother, her eyes full of tears. "Please, Nii-sama."

Realization fell hard upon him at the use of her childish intimate nickname for himself. He turned and kissed her forehead, similarly to when she had climbed into his bed and asked him to fight away her nightmares.

"All right, under a few circumstances."

Her eyes widened in pleasure and her mouth turned into a bright smile. She threw her arms around him. "Thank you so much!"

"Did you disregard the part where I said that you must submit to a few circumstances?"

She cocked her head confusingly. "What kind of circumstances?"

He stood then, walking towards the door. "Get dressed, we'll go for a walk around the lake."

"Outside? I get to go outside?!" she asked, jumping up.

He closed his eyes gently and shook his head. "Yuuki, you make it seem as if I keep you prisoner here."

"I just haven't been allowed out of the house for months," she muttered, looking down at the floor.

"Can you blame me for being concerned for your safety? Vampires and vampire hunters alike have been searching for the Kuran princess since the death of our Oji-sama," he said, staring out the window into the sunlight, which poured in from the cracks of the window. He turned slowly to her. "Okaa-sama instructed me with the duty of protecting their only daughter, and I will shoulder that task to the best of my ability," he said.

"You're quite selfless, Kaname," Yuuki said, unbuttoning the front of her nightshirt, her back to him.

His hand rested atop hers, putting his hands around her waist and halting her undressing. The shirt was unbuttoned enough to expose her neck to him and he bit into her flesh, carefully sucking out her blood.

"I'm not as selfless as you may think, little one."

She watched him as he left the room, gently wiping the scarlet liquid from his lips.

xVxKx

"Kaname-sama! You can't be serious about taking Cross Yuuki!" Aidou shouted, standing.

Like a flash Kaname was at Aidou's side, and slapped him so quickly he couldn't even react.

"You will not speak to me about my sister so informally," he snapped. "She's the princess of the Kuran's, the oldest pureblood family in Vampire history, and I will not allow you to address her with such familiarity."

"Onii-sama…" a voice said, and all of the other vampires in the room turned their heads to see Yuuki's entrance.

"Ohayo gozaimasu, Yuuki-sama!" They all announced, standing and bowing in respect.

"Oh-Ohayo," she said, returning their bow with her own. She then turned to Aidou. "You may call me Cross Yuuki if you wish, Aidou-sempai."

Aidou's head bowed in respect. "Please forgive me for addressing you so casually, Hime."

She frowned. "I am no princess, I'm just a high school student, and to be honest, I'd rather you address me as Yuuki-chan," she said, looking up at her brother with a smile. "I was simply Yuuki before I awakened, and I would like to remain simply Yuuki."

They all looked at Kaname for his approval, after a moment he smiled warmly. "As you wish, Yuuki."

She grinned happily. She had decided to wear a pale pink skirt with knee-high brown boots and a white long-sleeve t-shirt.

"Yuuki, it's snowing outside, so you should probably put on your coat." Kaname ordered, handing her a heavy navy blue coat with white fur. He had chosen a simple pair of slacks and his heavy navy blue overcoat.

They walked to the door and Kaname allowed Yuuki to exit the mansion ahead of him. She spun around in a circle, slowly taking in the image of the winter wonderland surrounding her. Snow had weighed down the trees and coated the fountain in the front, freezing the water. As far as the eye could see was covered in a blanket of white. Snow was falling heavily and Yuuki put her hands out, catching the falling snowflakes.

She turned suddenly, grinning in Kaname's direction. "Isn't the snow beautiful, Nii-sama?"

He was watching her with a blank expression on his face. She cocked her head to the side. "Are you all right, Kaname?"

He snapped out of his day dream and smiled warmly. "This is all very nostalgic for me, it reminds me of unhappy times."

"Unhappy?"

"It was snowing the day your memory was erased and you were stripped from my arms for ten years," he reminded her, but she turned to him and took his hand.

"That wasn't necessarily an unhappy time, Nii-sama," she said, as she led him towards the lake. "You saved my life that day."

He intertwined their fingers as she pulled him towards the bank of the frozen lake.

"Look Nii-sama, the lake is frozen solid!" she said, taking a step onto the ice.

"Yuuki-chan, please come off the ice, I'm afraid you are making me quite worried, you could fall, or even fall through the ice," he said, holding out his hand.

"Oh Nii-sama," she said, giggling. "You're very protective of me, but I'm not a little girl anymore, I'm a woman," she announced, her hands on her waist. He looked over at her, passion flickering in his eyes. "That I know, far too well," he said stepping onto the ice. She stood there, chin raised and eyes arrogant until he reached her.

His arms went around her in a loving embrace and his lips covered hers, they kissed passionately atop the ice as the snow fell around them. He kissed her chin and then her neck, but pulled away to keep from becoming tempted. "Consider my concern a reaction of a worried fiancé to his future wife, instead of an older brother to his younger sister."

She looked away. "When you say it like that, I feel as if I am doing an inexcusable act by loving you."

He chuckled. "I find the human side left in you almost as endearing as the memories of a gangly little girl who ran into the bedroom of her "Nii-chan" after having a nightmare."

She turned then, but she slid on the ice falling backwards. Kaname caught her easily in his strong arms, holding her close to his body.

"You… you caught me," Yuuki said, stunned at Kaname's quick reflexes.

"I'll always catch you when you fall, Yuuki."

She looked out at the falling snow, her eyes deep in reflection.

"What are you thinking about?" he asked, holding her close to him as he carefully stepped out of the ice.

I was thinking about…" but then she silenced. "Never mind."

"Yuuki, you don't have to hide anything from me, nothing you say or do will push me away. I want to know your thoughts."

"I was wondering…" she started, her cheeks reddening. "I was wondering how is it that Aidou-sempai, and all the other vampires can usually go a few weeks without needing someone's blood, but if I'm without yours for a few days, I become restless?"

He tucked her head under his chin, and she could sense the blood pumping though the veins on his neck. "Because," he said. "Aidou-san and the others have been taught to drink blood since they were young children, but as for you, you haven't developed the foundation of vampire behavior. My blood was given to you freely when you were young. Your fangs hadn't fully developed and you were unable to get it yourself, so it was given to you to keep you strong and healthy, but when your vampire side was sealed your thirst was sealed as well, and you lost the foundation of knowledge that most vampires have," he explained. "This causes you to become thirsty quickly and is also the reason why you won't bite to get your own blood."

She licked her lips absentmindedly as she stared at the vein on his neck.

He pulled back the collar of his shirt, exposing his neck. "My blood is always available to you, Yuuki."

"I… I can't."

"Look at me, Yuuki," he says and her eyes flashed red in response to her growing thirst. "You can do this, you must, it is something you have to do in order to grow as a vampire."

She put her hands around his shoulders and propped herself up, still in his arms. She pushed back the brown hair around his neck and buried her head into the crook of his neck.

She exposed her fangs, but as soon as she did, tears spurted out of her red eyes. "I… I'm scared."

"It will not hurt me, Yuuki," he promised. "It will just give me a large amount of relief."

She placed her fangs against his smooth neck, but when her lips touched his cheek she began to shake uncontrollably. Her breath came in heaves and her chest rose and fell with her racing heartbeat.

"Bite, my love."

She began sobbing, her tears rolling down her cheek, and she hid her face into his chest. "Let me go," she said.

"No."

She looked up, stunned. "Kaname, let me go."

"You need to learn how to get it for yourself."

"I can't," she said, struggling in his arms, but after a swift kick he released her and she fell upon the ice, crashing through the layer and hitting the ice cold water.

She was sucked under the ice, unable to find the surface. She could smell her blood everywhere, and the smell made her scream in agony, which only caused her to inhale more water. Within seconds she felt a pair of hands wrapping around her waist and dragging her to the surface.

"No! Get away!" she fought. Now all she could smell was blood, not only her own, but his.

"Take it," Kaname finally said, slicing a large gash in his neck. Blood came down his neck and soaked his shirt, the water was stained with it. "You'll go into shock if you don't drink it, now."

She couldn't resist his scent and began to lick the blood off of his neck. She then sucked at the gash at his neck which was now gushing blood. She didn't even stop for air, not wasting one drop of the blood that was streaming down his neck. The smell was overpowering, and the taste, was wonderful. She drank so much she began to wonder if he was alright.

"I should stop…" she said, looking into his pale brown eyes.

As soon as she took her lips off of the gash, it began to heal, and after a few seconds, it sealed off completely.

Her hair was still caked with his blood, she could smell it everywhere. Her eyes weren't changing back to there original brown color. She still thirsted uncontrollably for his blood.

"Kaname, you need to get away from me," she told him as she shivered in his arms as they floated in the ice-cold water. "I… I can't control…"

It was then that she did it, as if she had always taken her blood that way. She bit down on his neck gently, just until the blood began flowing into her mouth. This time she felt different. This wasn't just for survival, this was showing her adoration for her future husband. She kissed his neck and began drinking his blood, unable to stop. She then kissed his lips, biting gently on his bottom lip until she tasted a small hint of his blood.

"Kaname…"

"Drink until you've reached your ceiling, my beautiful adult vampire."

And she did.

A/N: Hope you all liked it! Please review and tell me what you think about it!!