Kenji's hand remained at Karin's waist where she had placed it. The spiral beside the locked door glowed steadily, sealing the bedroom away from the sounds of the estate.
Karin held his gaze. Her breathing had quickened now that there was nothing left to test or arrange. She had asked for his entire night, and Kenji was still standing exactly where she had pulled him.
He did not joke or drag her closer. His thumb moved once against her side.
"What kind of attention?"
Karin reached up, pulled the fine-tipped sealing brush from behind her ear, and stepped away from the door just long enough to set the tool carefully on the nearby desk so it would not be lost or broken. Then, she turned back, caught the front of Kenji's jacket in both hands, and pulled him into their first kiss.
The first kiss was hungry and slightly uncoordinated. Karin had imagined it often while sitting over Mito's records, but the reality of Kenji pressed against her did not follow any of those rehearsals. When she changed the angle, the edge of her glasses bumped against his cheek.
Karin pulled back with an irritated breath. Kenji touched the frame but waited until she nodded before removing it. He folded the glasses and placed them on the desk beside her sealing brush.
Karin caught his jacket again and immediately pulled him back.
This time, she pressed him back from the door and toward the center of the room. Her hands tightened their grip on his jacket, pulling him down to her level, while Kenji's hands remained steady at her waist and lower back.
Kenji kissed the corner of her mouth and moved slowly along her jaw.
"Everything I said downstairs was true," he murmured against her skin. "You studied Mito's work until you understood it, changed it for your own needs, and built something that actually works. You earned this."
Karin's fingers tightened in his jacket. She swallowed once, then pressed herself against him and kissed him harder.
"Good," she whispered against his mouth. "Don't stop praising me just because I'm already collecting the reward."
She pushed the jacket off his shoulders herself. She guided the heavy fabric down his arms and dropped it over the chair near the desk.
Kenji loosened the ties of her outer top while they kissed. Karin helped push the fabric down her arms, taking her undershirt with it.
His hands stopped when the pale light revealed the uneven bite scars scattered across her arms and shoulder. One finger hovered near the raised skin without touching it.
Karin stiffened.
Kenji looked from the old marks to her face. "I won't bite you unless you ask me to."
Some of the tension left her shoulders. She turned and guided his mouth toward an untouched stretch of skin near her right shoulder.
"Here. And don't act like I'll break."
His teeth closed carefully over the spot she had chosen. The pressure did not break her skin, but the warmth of his mouth and the controlled bite sent a sharp shiver down her body.
Karin groaned and gripped the back of his neck. Her thighs pressed together beneath her trousers as heat gathered between them.
"Harder."
Kenji increased the pressure gradually, never enough to damage the skin. Karin's thighs pressed tightly together beneath her remaining clothes, her breath catching as the wetness began to spread between her legs.
She kissed him deeply, pushing him backward until the edge of the mattress hit the back of his knees.
Kenji sat at the edge of the bed. Karin stood between his knees. She pulled his shirt over his head and dropped it across the jacket already hanging from the chair before pushing him flat onto his back against the mattress.
As Kenji reached for her, two glowing chakra chains rose behind Karin and slipped around his wrists. They held him loosely against the bedframe, leaving enough space for him to move his hands.
Karin climbed onto the bed and straddled his crotch, still wearing her dark trousers and underwear. Kenji remained beneath her without testing the chains again. Karin looked down at him, and a satisfied smile slowly appeared.
"This is my reward," she reminded him.
Kenji settled more comfortably beneath the chains. "Then use it properly."
Karin leaned down and kissed him, rolling her hips to grind her clothed center directly against his stomach. The movement began slowly, a teasing rhythm that grew firmer and more urgent as the heavy friction built through the layers of their fabric.
Karin kept one chain loosely around his right wrist while releasing the other. She caught his freed hand and guided it beneath her waistband. The remaining chain never pulled tight, but its glow stayed wrapped around his wrist as she moved above him.
Kenji did not immediately thrust his fingers inside her. He cupped her through the damp fabric of her underwear, feeling the heavy heat and wetness spreading there. Karin let out a frustrated noise and pulled the fabric aside herself.
Kenji slid his hand beneath the cotton. He spread her slick folds with two fingers, gathering the heavy moisture, and began circling her clitoris with his thumb.
He slipped one finger inside her. He waited, letting her heat envelop him, and added a second only after her body relaxed fully around the first. Karin refused to lie still. She rode his hand, using small, demanding movements of her hips to control exactly how deep he went.
Karin's breathing broke into short, uneven gasps as she continued moving over his hand. She leaned across his chest and pressed the chosen spot on her shoulder against his mouth.
"Bite," she demanded.
Kenji closed his teeth over the same patch of skin while his thumb kept circling her clitoris and his fingers curled inside her. Karin's hips lost their rhythm. She tried to continue riding his hand, but the pleasure was already rushing through her too quickly to control.
The chain pulled tight against the bedframe with a metallic clink. A broken cry escaped against Kenji's neck as her body clenched around his fingers and shook through the release.
When the final tremor passed, Karin sagged against his chest, breathing hard while the chain gradually loosened again.
Karin rested against his chest until her breathing steadied. Then she sat up, pushed the rest of her clothing down her legs, and kicked it toward the foot of the bed.
Karin opened Kenji's pants and worked them down his legs with his underwear. Kenji helped kick both garments away, leaving them beside the bed before she moved between his thighs.
She wrapped her hand firmly around his base, and lowered her head to take him into her mouth.
She began eagerly without pretending she already knew exactly what he liked. Kenji's breathing, the tension in his thighs, and the involuntary movement of his hips showed her when the pressure was right. Whenever his reaction sharpened, she repeated the same motion and gradually found a rhythm that made his hand tighten in her hair.
The loose chakra chain remained around his wrist while she worked, glowing faintly against his skin.
"Karin," Kenji warned, his voice straining. "I'm close."
Karin immediately pulled back. She had no intention of ending the night there. She wiped her mouth with the back of her hand and crawled back up his body.
"The reward isn't ending that quickly," she told him.
Before climbing over him again, Karin reached into the pouch beside the bed and removed a square paper seal. She pressed it against the skin just above her left hip and fed chakra into the ink. The markings glowed once before settling into a dim red pattern.
Kenji studied the active seal while Karin positioned herself over his thighs. "Pregnancy prevention?"
"Active and tested," Karin answered. When his eyebrow rose, she immediately understood the question behind it. "Either trust my seals or stop praising them."
Kenji laughed, and some of the nervousness left her shoulders.
Karin wrapped one hand around Kenji's cock and stroked the hard shaft once. She rubbed the swollen head slowly through her wet folds, spreading her slickness over it before pressing the tip directly against her pussy.
Karin wrapped one hand around Kenji's cock and rubbed the swollen head slowly through her wet folds. Once it was coated in her slickness, she positioned it against her entrance and began lowering herself.
The first stretch pulled a strained breath from her. Her fingers dug into Kenji's chest, and she stopped after taking only the head.
Kenji kept both hands at her hips without pushing. "Take your time."
Karin gave him an annoyed look that lacked its usual force. "I am."
She remained still until the first sharp pressure began to ease. Then she lowered herself another small amount, stopped again, and breathed through the discomfort. Kenji supported her weight but left every movement to her.
"Still good?" he asked.
Karin nodded. "Just don't move yet."
He obeyed.
She continued gradually, taking him a little deeper each time the tightness relaxed. Her eyes watered once when she moved too quickly, but Kenji immediately steadied her and waited until she chose to continue.
Eventually, Karin settled fully against his thighs. She remained motionless above him, adjusting to the fullness while Kenji stroked one hand slowly over her back.
"You're doing well," he said quietly.
Karin let out an unsteady laugh. "You were ordered to keep praising me."
Her first movements were small. She lifted herself barely an inch before lowering again, testing the pressure and learning which angle caused discomfort. The tightness gradually eased, allowing each movement to become smoother.
Karin slowly found a rhythm she could control. She began lifting herself farther, letting his cock slide partially out before lowering herself again with a soft gasp. As the discomfort faded, confidence returned to her movements.
Kenji kept one hand around her waist while the other stroked slowly over her back. He praised her quietly and gave her as much time as she needed.
When Karin finally moved, she started with tiny lifts of her hips. The first few made her face tighten, but the pain gradually faded as her wet pussy adjusted around his shaft. Each careful movement replaced some of the ache with friction deeper inside her.
Karin slowly found a rhythm she could control. She lifted herself farther, let his cock slide halfway out, then lowered herself again with a soft gasp. Her confidence returned as the pleasure began overtaking the remaining soreness.
She caught Kenji's hand and placed it firmly on her ass. His fingers tightened around the soft flesh while his other hand stayed at her waist, steadying her without controlling the pace.
As her rhythm quickened, Karin leaned forward and pressed the chosen spot on her shoulder toward his mouth.
Kenji closed his teeth over the same place while she ground herself firmly against him. Her rhythm broke a moment later. The chain tightened around the headboard as the orgasm passed through her, leaving her trembling against his chest.
Kenji kept his hands at her hips until the shaking eased. When she finally lifted her head, he brushed his thumb along her side.
"Do you want to stay there, or do you want me to take over?"
Karin dissolved the chain around his wrist, caught his shoulders, and rolled onto her back while pulling him with her. That was answer enough.
Kenji settled between her thighs and began slowly because she was still sensitive. When her breath caught too sharply, he changed the angle. When her nails dug into his shoulders and she demanded more, he increased the pace.
Karin wrapped her legs higher around his waist and refused to hide her reactions. She pulled him closer, guided his mouth back to the chosen spot on her shoulder, and told him exactly when to bite.
Kenji drove his hips forward one final time, finishing deep inside her with a heavy groan.
Karin let out a sharp cry, wrapping both arms tightly around his back and holding him flush against her.
Kenji remained with her until her breathing slowed. When they finally separated, he used the basin and clean towels in the bedroom's attached washroom, never crossing the sealed outer door.
He cleaned them both, then passed a damp cloth carefully over her shoulder. The skin was dark where his teeth had pressed, but it had not broken. Karin touched the new bruise with clear satisfaction. It sat apart from the old scars because this one had been requested, controlled, and chosen by her.
Beneath the blankets, Karin curled against his side and rested her head on his chest. One weak chakra chain remained looped around his wrist.
"It's part of the barrier test," she muttered.
Kenji looked at the loose glowing link and wisely chose not to challenge the explanation.
They lay quietly until Karin's fingers tightened around his arm.
"People used to take what my chakra could give them and leave when they were finished," she said. "I wanted proof that you wouldn't."
Kenji covered her hand with his. "I'm not leaving tonight."
Karin looked up at him. "Only because I asked for your full attention?"
"Your request lasts until morning."
Her breathing gradually slowed. The chain around his wrist went slack as she fell asleep, but it did not disappear.
Kenji could have broken it without effort. Instead, he settled against the pillow, left the loose link where it was, and closed his eyes.
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