Thanks to everyone who reviewed this story - really appreciate it. Final part - hope you enjoy!

Aversion VI: Sakura

"Stop this foolishness," said the captive again.

Rukia knelt by her brother's side. They had only been this close a handful of times, and never had she looked down on him before. Their eyes locked and - could it be? - she saw the slightest hint of panic in those grey rockpools. What could he be afraid of? Not her, so...himself?

"Rukia, remember your place -" Byakuya began sternly, before a whispered spell by his captor caused the bonds pinning his arms to his flanks to shift and travel like snakes up his body. That same raw power that had enabled her to trap a captain still tingled in Rukia's nerve endings, as the ropes of Saijou Sabaku split and encircled each of Byakuya's slender wrists, raising them past his head and bringing them together in a kiss. He closed his eyes and sighed.

It was the ultimate humiliation: to be bound and helpless meant the death of honour, the trait Byakuya set most store by. That the binding had been accomplished by one so much lower in rank made his wretched position ten times as mortifying. As the pressure built behind Byakuya's eyes, the fear entered his mind that someone might walk by and find him like this. The great Captain Kuchiki, trussed up by his own little sister. His heartbeat quickened.

As her brother lay there, eyes still closed, his arms stretched and fixed to the earth behind him, Rukia's eyes fell on his cloth-draped chest. She began to push apart the folds of uniform, noting a slight intake of breath as her fingers touched her brother's smooth skin. Placing the point of her sword on the seams, she cut away the precious haori and uniform, sliding away the fabric until Byakuya was topless.

As the last scrap of linen grazed his nipple, Byakuya inhaled sharply. He had not felt so vulnerable since childhood, and strangely, he felt safe.

Rukia looked at her handiwork. Seeing that beautiful body laid out before her, and knowing what it was capable of, was turning her on immensely. Byakuya's upper half had been worked and toned hard but otherwise he had remained almost girlishly slim. She dared herself to run a finger over those muscles, and felt a stiffening in his body as her touch traced his sensitive points.

"S..stop," he murmured, feeling his cock growing hot and full.

"Sakura," she reminded him gently, and continued. Her fingers danced their way down his gorgeous torso, stopping before the waistband of his hakama and playing for a second with the material.

Every disturbance caused the fabric to pull against his hardness, triggering tiny explosions of pleasure. Byakuya complained wordlessly, straining against his bonds. This was torture and she was an expert at it. He was heart-stoppingly afraid of her uncovering his arousal, and yet desperate for her to do so.

Rukia felt a warm wetness pooling on her inside thigh as she knelt, cutting away the Kuchiki kenseiken from his beautiful hair. She could tell, even covered by the hakama, that Byakuya's body was responding to her touch. She wanted to look at it and lay hands on it, wanted to use this chance to finally see him at his most open and vulnerable. Wanted him to call her name just like on that first night. If only she could summon the courage.

Damnit, THIS was why was an unseated officer. This fear of the unknown. She was not about to lose the one thing she was certain of to the same inhibitions.

Leaning in close to Byakuya, she kissed his eyelids, prompting a small exhalation. Then she placed her lips on his and felt him shiver with anticipation, opening to her kiss. Drawing back the folds of his pristine trousers, she felt heat and hardness, and as her hand closed around his swollen cock, he moaned like a man possessed.

"R...Rukia! My God, Rukia..."

Rukia tightened her grip and began to slide it up and down the shaft, as the captain's hips rocked gently into the delicious sensation. As her thumb passed over his agonised glans, he ached to be released, not knowing what would happen. Up and down, the tiny hand rose and fell, teasing him unbearably. He felt frenzied and feral, like a cornered wolf, utterly at her mercy.

Suddenly the hand vanished. Byakuya's eyes flashed open in dismay, only to see Rukia, her bright eyes trained on him, sliding each of her fingers into her mouth. Wet with saliva, the grip once again tightened around his cock and she increased the pace, coaxing gasps of pleasure from the captain.

"I...I can't hold out...too much..."

Hearing him surrender such confessions only increased the pounding in Rukia's clitoris. He was the same sexual creature who had taken her in the cellar, desperate and wild, and she wanted so badly to leap on him and sink onto that hard cock. This time, when she kissed him, he kissed back passionately, restrained only by his strict bondage. The vibration of his low moan, as she continued to masturbate him, resonated through his lips.

Letting go, she brought her face level with the opening in his hakama, and ran the very tip of her pink tongue up the underside of his shaft, causing him to holler raggedly.

"S...Sakura!" cried the captain, his eyes rolling back in his head.

A girl of her word, Rukia vanished the bonds sadly, expecting him to stalk furiously away. For a second, sitting up as the feeling came back into his arms, the captain's actions were uncertain. Then Byakuya rolled on top of her, ferociously kissing her, one arm beneath her head forcing her mouth onto his, as broken breaths thundered from his body.

His weight. Oh god, she'd dreamed of this sensation since the cellar. Feeling deliciously trapped beneath that powerful body, smelling cinnamon and mint and fresh sweat as he kissed her uncontrollably, that cock pressed against her stomach. She nearly came from his kisses alone, her cheeks on fire as his tongue plunged repeatedly into her mouth.

"I want you...Byakuya," she gasped between kisses. "Don't blindfold me this time. I want to see you come."

The captain once again pushed her firm legs apart, and waited for a moment, staring at the glistening liquid dampening her dark curls, running a finger lightly over her clit. Then he drove into her, pulling almost completely out before thrusting that hardness back in again and again.

"Byakuya...teacher..." moaned Rukia, tightening around his pounding cock, hearing him groan as she used his title.

"Rukia...I can't...control myself..." His silken black hair flew about him as he fucked her, his motions growing rougher and more animalistic. "I need you. Oh god, oh god..."

He grabbed her slim legs and lifted them onto his shoulders, pushing into her again as she scratched his moon-white back with her nails. With each new welt, he winced and thrust harder.

"Sensei, I...I'm going to come!" cried the small shinigami, her small heart nearly overcome. Hearing her use that title drove Byakuya over the edge. Pinning her skinny arms back behind her head, he drove mercilessly into her, staring her down, and she cried out in pleasure.

"You're mine. Say it." he whispered hotly in her ear, hips grinding into her.

""I'm yours...all yours," Rukia panted, dizzy with her building climax. "Ah! Ah, Byakuya-sensei!"

Her legs shook uncontrollably as she came. As she tightened around him, Byakuya threw his head back and cried out hoarsely, his orgasm running hotly into her like molten gold.

They sat beneath the nearest cherry tree for some time, listening to the minivet song twittering over the seiritei. What remained of Byakuya's haori was draped over the two of them.

"When I was 17, I allowed myself to be cajoled into visiting a Rukon brothel," said Byakuya, brushing a cherry blossom from Rukia's hair. "Several younger members of the Kasumioji clan teased me until I gave in."

Rukia was shocked, but said nothing. Let this river flow.

"It was a deeply uncomfortable experience," continued Byakuya. "They were laughing at me the whole time. Set me up with a prostitute who mocked me for not wanting to sleep with her. She laughed at me, asking if I couldn't manage it...treating me like a child. I felt...ashamed that I had allowed myself to be persuaded to come here. Ashamed for myself and what I represented. Kuchiki men are not whoremongers. My father always talked about discipline, integrity and strength, and here I stood, heir to the great clan, being laughed at by a cheap Rukon whore in some dingy back-room."

He paused, a strand of hair falling forward into his silhouette.

"I was desperate to stop what was happening. My angriest side wanted to kill her, to stop her vulgar mouth. But I realised quickly that that action would make me a cruel, weak and brutal man. After all, I deserved her mockery for allowing my pride to be defined by the childish Kasumiojis. Still, I needed to feel as though I had at least some control...some mastery over my own identity."

"What did you do?" Rukia asked, feeling her brother's arm tightly around her.

"I left, her laughter still ringing in my ears," Byakuya's brow furrowed. "And then I trained myself into injury at the Academy, trying to forget about women until such time as I needed to marry."

"Then you met Hisana."

"She was beautiful and kind. My father was concerned about her lack of nobility, but he saw how happy I was with her...I worry sometimes that I married Hisana simply because I saw she was meek. Too meek to laugh at me."

"Surely not. Brother, you loved her!"

"I fought my urges for a long time, but one night, a year after our wedding, I asked her if I could punish her. I don't think she understood why, but she agreed to comply, and submitted to being whipped, as you were, with the bamboo switch."

He paused and looked away.

"It was a disaster. She was brave, and bore the pain, but I saw in her eyes that she felt great shame and unhappiness. Confusion at my cruelty. I broke the switch and hardly dared touch her again. I was disgusted with myself."

"And yet, I couldn't kill this part of myself. When you entered the clan, after Hisana's death, it was like the windows had been flung wide and the air had come in. As you grew up, I found myself admiring your spirit more and more. Even when injured, you would be keen to return to the battlefield. Truly, you had the clan bravery, even if your blood was not Kuchiki. I found myself...forgive me...I found myself wondering whether you could stand..."

He exhaled and rested the back of his head against the tree trunk, staring at the sky.

"After the training session in which we...I felt like a criminal. No, like an animal. I had assumed a position of trust and abused you through that role."

"No...brother, I wanted it too...believe me," Rukia stroked his long neck, and he fixed those charcoal eyes on her.

"When you bound me, it felt as though all of my responsibilities and pressures just...melted away. I felt like I had permission to be myself. Rukia, you made me feel...normal again. How did you know?"

"I...I saw you," Rukia began tentatively. "The evening of May 10. With the servant...in the cellar."

Byakuya's eyes widened, and for a second, Rukia feared he might vanish in shame.

"You looked so beautiful, brother. The way you fought yourself. I can't think of a tougher foe...I wanted so badly to help you. I wanted you."

Byakuya kissed her softly on the lips, squeezing her to him, and the two of them sat a while longer, listening again to the birdsong.

Five months later.

"Heeyyyy, Rukia!"

Renji's voice echoed through the Squad Four barracks. Rukia downed her herbal tea in time to see her friend's spiky hair pop around the ward door.

"How're you feelin', hero?" He shook her hand jokingly.

"Not so bad - those Hollows'll have to belch out a lot more energy balls to get me down for the count," Rukia smiled, touching the bruises on her chest gingerly.

"That's the spirit! Seems like training paid off for both of us," grinned Renji, bringing the rest of himself around the door.

Rukia gasped as she saw the white captain's coat.

"Oh my god! Congratulations, you idiot!"

"That's Squad Five Captain Idiot to you," grinned her friend. "They must have figured Momo could use some entertainment to lighten her spirits. Plus, I could do with some kidou tips."

"I see you've told Ms Kuchiki some of the good news," a gruff voice from behind Renji said. Head Captain Yamamoto materialised in the doorway.

"Sir!" cried the friends in unison, and Renji fell to his knees.

"At ease, Captain Abarai," said the Head Captain. "Tell me, Rukia, since when did an unseated officer get reckless enough to take on and defeat ten Hollows and a Menos on their own?"

"Sir, it was foolish of me -" began Rukia apologetically.

"It's the sort of behaviour I expect of a lieutenant," continued Captain Yamamoto. "Probably an impetuous, newly-promoted lieutenant at that..."

It took a second for his words to sink in.

"S-Sir?" Rukia bit her lip excitedly.

"Report to the next Captain's meeting after your recovery to be instated," said the old general, turning to leave, "and congratulations, both of you. It seems the Rukon district turns out warriors just as fine as those from noble stock."

"Oh, thank you! I won't let you down, Head Captain!" Rukia stuttered. "Oh, but Sir?"

The Head Captain turned without a word.

"Sir, forgive me, but, well, you see, my squad leaves our lieutenant's place vacant out of respect for Kaien Shiba, our comrade and the previous holder of that title. I'm not sure if it's right -"

"Oh heavens, I understand that. I wouldn't dream of cutting through Jushirou's tradition," waved Yamamoto. "But with Captain Abarai's promotion, there is a second squad in need of a strong lieutenant. Captain Kuchiki seems very amenable to this idea."

As soon as he had gone, the two friends flew into a hug, laughing like children.

That night, two figures met by the koi pond in the breathtaking Kuchiki gardens

"Keep me sane, Rukia," said the taller figure.

"I will protect you, Sir," came the reply, and the two embraced, kissing as though there were nothing left to fear.

THE END