Authors Note *PLEASE READ*:

Hello all and a belated happy new year to everyone. Just before Christmas, I received an interesting PM, discussing my characterisation of Kari. In it, the reader noted that Kari is coming across as a slight sadist in places, although not in a bad way. I thought about this notion and the exact definition of a sadist for a while and came to the conclusion that it was a fairly accurate assessment. For those of you that either do not know or can't be bothered googling it, a sadist is defined as: a person who derives pleasure, especially sexual gratification, from inflicting pain or humiliation on others. While, as of yet, Kari has not experienced much sexual gratification from her actions, she has, on several occasions, done something to embarrass Tai or cause him a slight bit of pain (she bites his ear more than once) purely for her own amusement and pleasure. Again, as the reader indicated, her actions are meant to be playful and are in no way malicious or intended to cause Tai any serious harm (either physical or emotional).

So, that brings us to this little chapter. The idea to write this came to me while sitting and thinking about this particular part of Kari's character. While I have made two very slight references to BDSM in the main story (hunt for them if you like), it is something that has only been on the very outer edges of my thought processes (particularly when writing Kari's slightly sadistic moments) and was not something I had any intention of delving into in any greater depth. In that respect, please treat this chapter as NON-CANNON. Unless, of course, you guys like what you read and think it fits in with the main story. In that instance, I will consider making it cannon. In terms of chronology (not that it matters), this chapter is set about a week after the end of part four and features Kari having just had her hair re-done (spoiler, something from the first chapter of part five).

Anyway, I would like to dedicate this little interlude to Lucian Naruto, whose PM was the inspiration for it. Please let me know what you think of it and whether or not I should make it cannon. Enjoy.

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Interlude: Sexual revolution

It was dinner time inside the Kamiya residence and all four family members were seated at the table. On the menu this evening, chicken katsu with sticky rice and a choice of either sweet chilli sauce or light Japanese mayo. After her mother had spent a small fortune on her in town that day, Kari had insisted on reliving her of the cooking duties that evening. The meal was going down well, however, both her father and brother were being careful not to overpraise her, for fear of upsetting her mother. Speaking of her brother, Tai had paid her little heed since he had come home from the football with her father. Needless to say, Kari felt a little put out at this lack of affection. Ok, yes, their parents were home, which meant anything of a romantic nature was automatically off the table. However, that did not stop him giving her a hug or at the very least, a proper greeting. Hell, she'd just had her hair done and he hadn't even commented on it!

Stupid Tai, Kari cursed internally, as her gaze drifted over him to find he had eyes only for his dinner. This would not do. He was going to acknowledge her or suffer the consequences. She had to stifle a smirk as she slid her foot across the floor and found one of her brothers; who was sitting opposite her. Tai failed to look up from his plate and so she gently ran her toes from his ankle and down the length of his foot. She smiled sweetly at him when this time he did tear his gaze away from his plate to look up at her. He smiled back, however, she could see the slight look of confusion, with a dash of awkwardness, in his chocolate eyes; they quickly returned to his dinner. So, he wanted to play hardball with her, fair enough. Kari ran her toes along his foot again. This time she turned her gaze away and flicked her flaming hair when Tai looked up at her. Out of the corner of her eye, she noticed her brother shake his head and do a double-take. He'd only just noticed she'd had her hair done! What an airhead.

"Kari," Tai ventured carefully. She could tell that he knew he was in trouble and desperately trying to figure out how not to make things worse for himself. "Did you get your hair done today?"

A buzzer, the sort one would hear on a game show when a contestant gave a wrong answer, sounded inside Kari's head and she had to resist the urge to laugh. Well, duh, she thought, as she softly ran her fingers through it. "What gave it away?" she asked innocently. While she had to keep things parental friendly, ironically that actually made the situation more interesting. How far could she push Tai before he had to excuse himself, she wondered?

"I just noticed that there's no brown showing," Tai replied.

Well, that was an admission of idiocy if ever she had heard one. One more strike and you are so out of here, Tai. Beneath the table, Kari slowly began to run her foot up the inside of her brother's leg. While she kept her outward smile innocent and sweet, she knew full well that Tai would see through it to the devilish grin that lurked beneath. A slight rush of excitement, that she did not fully understand, washed over Kari at the sight of her brother struggling not to outwardly squirm. She watched him gulp as his cheeks started to turn red. Then she almost burst out laughing when his eyes frantically darted between their mother and father to see if either of them had noticed his display of awkwardness; neither had. "Some brother you are," Kari pouted in mock outrage. "Aren't you even going to tell me that it looks nice or that it suits me?"

A look of blind panic quickly spread across Tai's face, like he had just been caught with his trousers down. And Kari knew full well that her brother knew that he had dug himself an even deeper hole. She flashed him an evil smirk as she continued to run her foot up and down his leg.

To add insult to injury, their mother then fixed her gaze upon him. "Tai Kamiya," she said sternly, "you've been home for two hours and you haven't bothered to tell your sister how nice her hair looks yet! Where are your manners, Young Man?"

Kari had to busy herself with a mouthful of her dinner in order to stop herself bursting with laughter. This was just too good now. Even the irony of the situation, that it was her mother now saying how nice her lit-match hair looked, she found hilarious. While her brother suffered under their mother's gaze, she sneakily slid her chair slightly closer to the table.

"Your hair looks really nice, Kari," Tai eventually stammered. Their mother glared at him, forcing him to quickly add, "it really suits you."

"Thank you, Tai," Kari replied with another innocent smile that hid one laced with mischief.

She then once more ran her foot up the inside of her brother's leg. Their eyes met and they shared a wordless conversation that went something like:

"Kari, you wouldn't dare."

"Wouldn't I, Tai?"

"Kari, I'm warning yo…"

"…Oops."

Kari stretched her leg out to its maximum reach and planted her foot firmly over her brother's crotch. Gently she began to rub her toes up and down until she could feel the bulge from in his trousers. She watched as Tai visibly tensed, again having to internalise her laughter. Giving him one last sweet smile, she returned her attention to her own dinner, all the while continuing to rub at her brother's now erect penis with her toes. If either of their parents were to glance under the table, there would be a lot of awkward questions. However, for Kari at least, the danger that she could be caught with her foot in her brother's crotch was utterly exhilarating. Out of the corner of her eye, she watched Tai wolf down the last of his katsu faster than she had ever seen him eat before. She smiled internally. Not only did he want to escape the dinner table, but she had a sneaking suspicion that her brother wanted nothing more than to go straight to his bedroom for some alone time.

Across the table, Tai cleared the last morsel from his plate and Kari felt the bulge in his trousers move beyond her reach as he pushed his chair backwards. It seemed that vengeance was hers and she would wager that Tai would not ignore her again in a hurry. Only this knowledge did not satisfy her. She felt a hunger deep inside and not for chicken katsu. Like she was a wolf that had injured its prey, but was about to see it escape her clutches… she had no intention of letting that happen.

"Is it ok if I go finish some schoolwork?" Tai asked of their parents, causing Kari to scowl internally. Schoolwork her backside.

"Go right ahead, Son," their father said as he gave Tai a warm smile. "Since I whisked you away from your studies this afternoon and your sister cooked, your mother and I will take care of the dishes."

"Thanks, Dad."

Kari watched as her brother gingerly stood up and quickly turned his body so that no one would catch sight of the large bulge in his trousers. With haste, he scooped up his plate and headed to deposit it in the kitchen. "Don't study all night, Tai," she called out after him. "I'm in the mood for a game of Super Smash Siblings."

When her brother turned to look at her, she gave him a quick devilish grin, then left him to stew on what she had meant by her comment. While she had a limited window of time in which to operate, Kari forced herself not to rush the last of her dinner, lest she arouse suspicion from her parents. When she had finished, she excused herself, took her own crockery to the kitchen sink, then headed towards the hall. Just in case either of her parents were watching, she ducked into the bathroom first and made use of the facilities. Tentatively, she poked her head back out into the hall to check if the coast was clear. Perfect, both her mother and father had gone into the kitchen. Stepping lightly, she crept towards her brother's room. Extending a hand, she carefully turned the doorknob and hoped that her brother had not locked the door. It easily parted company with the frame. Crossing into the dimly lit room, her gaze fell upon the bed where her brother lay sprawled. His eyes were closed, his trousers and boxers bunched around his calves and one hand clutched around his erect penis. Kari smiled to herself as she silently closed the door and locked it behind her. Tai was completely oblivious to her presence. Now, how best to make him jump?

"Tai Kamiya!" Kari exclaimed firmly in her mother's tone, although not loudly enough that her voice would travel beyond the confines of the bedroom. "How dare you do something so indecent!"

Tai's eyes snapped open as he scrambled to cover himself with a bedsheet. Yet again Kari had to stop herself from laughing. She did not know how she managed to maintain a stern expression when her brother's chocolate eyes finally met her own reddish-browns. "K…K…Kari," he eventually blurted out, though she could see the partial look of relief on his face.

When Tai made to sit up, Kari stepped towards the edge of the bed and pushed him back down to the mattress. "You've been a naughty boy, Tai," she said firmly but with a hint of seduction and a dash of evil.

He looked up at her with his mouth agape, "K…Kari… I…"

She swiftly cut him off, "not only have you ignored your gorgeous sister and her smoulderingly hot new hairdo this evening, but then you lied to get away from the dinner table and weasel your way out of doing the dishes, just so you could jerk yourself off."

She gave her brother one of her devilish smiles as he stared up at her, eyes wide. Something about her must have unnerved him, as his fight or flight instinct kicked in and he suddenly tried to bolt from the bed. Kari laughed evilly as she shoved him back down, then climbed atop him. Tai made a grab for her, but she easily caught his hands and pinned them above his head. "You're going to have to be punished, Tai," she said seductively in his ear, before giving his lobe a quick nibble.

"Kari, mom and dad are home. What if they catch us?" Tai said frantically, as she pressed her crotch against his throbbing member.

"Unlike you, I locked the door," Kari replied, taking in a long whiff of fresh grass, honey and lavender from his neck, before marking the spot with a kiss. "Besides, it wouldn't be punishment if you didn't suffer. You're just going to have to keep quiet, aren't you?"

Her brother could only respond with a groan as she rubbed herself against his throbbing penis; she laughed. Still pinning his wrists above his head, Kari slid herself down his body. "Unfortunately, my hands are a bit tied up at the moment," she said evilly as she gave him another wicked smile. "I guess I'm just going to have to use something else."

"Kari, don… hah!" Tai exclaimed as she licked the tip of his penis with her tongue.

"Don't what, Tai?" she asked innocently, running her tongue all the way around the head of his cock, causing it to quiver.

"Mmmh!" he moaned at her ministrations, clearly having stifled it.

Kari gazed into her brother's eyes with a devilish look as she began to run her tongue up, down and around his entire shaft. She knew full well that she was already driving him crazy and that making eye contact with him had ratcheted his pleasure up a notch or three. Pulling her head back, she seductively opened her petite lips and allowed his penis entry into her warm mouth; eliciting a louder moan this time. It seemed that Tai was rapidly losing control. Slowly, Kari bobbed her head up and down on the first inch of her brother's long shaft. Now getting a full taste of his salty pre-cum. Descending deeper, she could feel the wetness in her own panties. An evil thought crossed her mind. She had said that this was supposed to be punishment after all. How far could she push him, she wondered?

Drawing back, Kari allowed her brother's penis to slip from her mouth. Pulling herself up onto her knees, she could see the look of agonising frustration on his face; he must have been close. "Were you enjoying that, Tai?" she asked with mock innocence.

She watched in amusement as her brother grappled with what to say. He clearly sensed a trap, which was no surprise as they knew each other too well, however, it was evident that he was unsure if he wanted to evade it or fall right in. With obvious difficulty, he eventually replied, "yes."

While externally she radiated confidence, internally Kari was in turmoil. Somehow, she knew what she was doing, knew exactly how she wanted to proceed, what she wanted to do to her brother. But, did she have the balls, no pun intended, to do it? Better yet, did she have the right? This was certainly not something she and Tai had discussed. Was it fair of her to shanghai her brother into something that he might not be comfortable with? And where had the urge to do this even come from? It certainly hadn't been something that she'd fantasied about. Yet here she was, wanting nothing more than to take all control away from Tai and do what she wanted to him. Not to mention the added danger of having their parents in the apartment. Except that only added fuel to her fire. A glance at her brother and how much he was already at her mercy made the decision for her. "Do you like being teased and toyed with by your evil little sister?" she whispered seductively in his ear. While she was technically giving him the opportunity to say no, she was deliberately stacking the deck in her favour, as she rubbed her crotch against his erect penis and slowly snaked her tongue from his ear and down his neck.

She could hear Tai breathing heavily beneath her as he uttered, "yes."

Kari smiled at him as she drew herself up and arched her back, brushing her still clothed breasts lightly against his face. She dangled them in the air above him as she sensually squirmed her body. "You like it when your evil little sister takes control of you," she rubbed her breasts all the way down his chest and over his still throbbing member as she spoke, "don't you?" she finished, rolling her tongue around the tip of his dick with a grin.

Her brother was panting now, her acts clearly driving him wild. A look of anguish spread across his face and Kari drank it down; it tasted delicious. Under any other circumstances, she would definitely have felt sorry for him. Only she wanted this too much. They both knew what he was going to say and, understandably, it was causing him a lot of confusion. Inside his head, she knew that he would be asking himself the reverse of the questions she was asking of herself. Chiefly, why am I enjoying having all control taken away from me? This would merit a serious conversation at some point later on. Of that she was certain. However, in the here and now, she felt an exhilarating thrill when Tai shakily answered, "yes."

At the sound of that one little word, all doubts were thrown out of Kari's mind and she was fully committed to what she was about to do. "Good boy," she replied seductively and gave him a sweet smile. "Now, you're going to hold still for me, understand?"

There was a slight hint of trepidation in Tai's eyes as he nodded to let her know that he would do as she had commanded. It too was delightful. Relinquishing her hold on his wrists, Kari undid her brother's tie and set it aside, then quickly unbuttoned his shirt. Using it to pull him upwards, she slipped it from his shoulders and tossed it to the floor, before roughly shoving him back down to the bed. He let out a small, "oof," but she ignored him, having already seized his trousers and boxers and ripped them off his legs. To further exert her dominance and prevent him from backing out, she shifted her knees and pinned his upper arms. Seizing his school tie in one hand and his left wrist in the other, Kari tied the former tightly around the latter and then to the headboard. Removing her sailor collar, she then did the same to his right wrist. Sliding back down the bed, she admired her handiwork as Tai helpfully tested his bonds. There was no way he would be getting up from the bed without her say so or some serious feat of strength. She could feel the excitement flood her and the dampness in her crotch intensify as she surveyed her helpless brother. She took a deep breath as she savoured the moment. Tai was hers to do with as she pleased, the knowledge of which almost made her pop there and then.

Seductively, Kari twisted and turned her body as she slowly pulled off her top. Her breasts practically burst out of her bra as she undid the clasp and cast it aside. Cupping them in her hands, she bent over and smothered them around her brother's solid penis. "Does that feel nice?"

"Yes," Tai moaned in response.

She slid back and forward, feeling her brother's cock throb between her small breasts. "Do you want to cum, Tai?" she asked with a wicked smile.

"Yes!" her brother exclaimed, clearly struggling to keep his voice down at a level that would not escape the confines of his bedroom.

Kari squeezed her breasts slightly tighter then thrust them up his shaft. Tai let out a moan, but instead of sliding back down to continue, she released the pressure and his penis slipped from between them. "Too bad," she replied evilly, lapping up the look of anguish on his face. "I don't think you deserve to cum yet."

Tai groaned, "Kari, you evil bit…"

SLAP! Kari hit his left inner thigh with the palm of her right hand. Tai looked up at her completely stunned. Except it was not just her brother that she'd surprised… she'd just slapped him! And Kari did not know what shocked her more. The fact that she had just slapped her brother's thigh, or the fact she knew she had just slapped his thigh because his ass was, at present, not a viable target. However, the heat of the moment quickly overtook her and she found herself back in control of the situation. "What was that you were about to say Tai?" she asked, her voice daring him to finish the phrase.

Her brother remained silent. Perhaps, in part, because he was still slightly stunned at what she had done, but more likely, she suspected, because he knew full well she would do it again should he utter those words. She gave him a disapproving look as she slapped his thigh again; though not quite as hard this time. "I asked you a question, Tai," she said, giving him another slap. "I'm waiting…" slap.

She watched her brother grimace slightly as he bit his bottom lip; damned if he did and damned if he didn't. When he again refused to answer, she slapped his right thigh this time. "It sounded to me like you were about to call me an evil bitch, is that right?" Slap. Slap. Slap.

"Ok… yes," Tai eventually said through gritted teeth, finally electing to be damned for doing.

"Yes what, Tai?" Slap.

"Yes, I was about to call you an evil bitch."

A thin smile formed on Kari's lips. "That wasn't so hard now, was it?" She gave his cock, which had drooped a little while she had been slapping him, a few light strokes, causing it to fully stiffen once more. He at least deserved a minor reward for having told her the truth.

"No," Tai breathed and let out a light moan.

"Unfortunately," Kari's smile vanished instantly and was replaced by a stern look, "I don't take kindly to being called an evil bitch. So, I'm going to have to punish you." She revelled in the look of horror that spread across her brother's face as her eyes started to scan around the dimly lit room. Eventually, her gaze fell upon his discarded trousers. While not ideal, they would still do the job just fine. Reaching over the edge of the bed, she scooped them up. "Hold still," she commanded, as she tied the bottom of one leg around Tai's left ankle.

"Kari, you can't be serious," Tai protested, presumably in relation to her comment about punishing him and not at her demand… or both.

She shot him a firm look as she bent his left leg towards his chest and fed his trousers around the top of the headboard. "I'm perfectly serious," she said as she made a grab for his other leg. Tai squirmed it out of her grasp, but only for a moment as she quickly caught his ankle. "So, you can either be a good boy and take your medicine," he tried locking his leg out, so she pressed the nerve point behind the knee in order to make it bend, "or I can leave you here, like this, until I decide to see if you've changed your mind." She wrapped the second trouser leg around his right ankle and tied it tight. Again, she took a step back to admire her handiwork. Tai, her brother, someone who at only eleven years old had led a group of children against an unspeakable evil and won, now lay on his own bed with his hands and feet bound to his own headboard. His ass was now on full display and his still erect penis pointed towards the roof; with only a slight lean to the left.

Planting her feet on the mattress, Kari stood up. She was not the tallest girl in her class, but from where Tai was lying right now, she must have towered over him. She smiled down at him, an evil, mischievous smile, as she unzipped her green school skirt and allowed it to fall down to her ankles. Stepping out of it, she kicked it over the edge of the bed. Her eyes locked onto her brother's as she sensually slid her underpants down her legs and removed them; keeping them in one hand. She could tell that, in part, he was unsure, perhaps even a little scared of what she planned to do to him, but alongside that, she could see, no, feel, a level of anticipation. "Like what you see?" she asked as she straightened, tossed her hair behind her head and squeezed her breasts together.

"Yes," Tai replied quickly, giving his bonds a cursory test; they held firm.

"Ooh, aren't we eager to please now," Kari said as she dropped back to her knees and leaned over him. He moaned as her exposed, wet pussy brushed over his solid cock. "Too bad I still have to punish you," she whispered in his ear as she spanked his left butt cheek.

He winced slightly before saying with a healthy dose of sass, "bite me."

The remark took Kari slightly by surprise but only succeeded in drawing a mischievous smile and adding fuel to the fire. "Alright, have it your way," she said and she bit down on his earlobe.

"Oww, Kari," he hissed. "That hurt!"

"Awww, poor baby," Kari said mockingly as she grinned at her brother. "That'll teach you to make such silly suggestions, won't it. Now, I think I've had enough of your sass for one night." She then turned her panties inside out. "Open wide, Tai."

Her brother looked at her in horror. "No way, Ka…" was the only part of his protest that he managed to utter as she used the opportunity to shove her wet panties inside his mouth, "mmph!"

"Sorry, Tai, I can't hear you," she laughed, feeling even more empowered and turned on at the sight of her brother now gagged with her own sodden panties. "Now, I suggest you get used to the taste of your sister's cum, as you're going to get a proper mouthful of it soon."

"Mmph!"

Spank! Kari swatted Tai's right butt cheek and savoured the sound her hand made upon impact.

"Mmph!"

Spank! This time his left butt cheek. In her other hand, Kari seized her brother's solid cock. She gave it a few light strokes; eliciting a groan. She continued on like this, a couple of spanks followed by some gentle stroking. A glance at Tai's face told her that this was driving him nuts. Pleasure laced with pain, but not enough to allow him any release, a perfect torment. After a few minutes of this, Kari surveyed her brother's ass in the dim light from his desk lamp. Both cheeks were now a slightly glowing red and felt somewhat warm to the touch.

"Have we learned our lesson yet?" Kari then asked seductively.

Tai's eyes met her own and he nodded frantically, a look of desperation smeared across his face. She found the sight of him completely helpless and tormented intoxicating. He must really need to cum now. She grinned internally. Too bad for him that she needed cum too. She released her grip on his cock and reached for her panties. "Now, I'm going to remove these, but I don't want to hear a sound from you. No moaning, complaining or sassy commentary. Do you understand?"

Tai nodded his head in response.

In one swift motion, Kari plucked her panties out of her brother's mouth and dropped them onto the floor. He flexed his jaw a little but managed to remain silent. She then positioned herself so that her pussy dangled over his face. "Do you see this?" she asked, rubbing a hand through sodden pubic hair.

"Yes," Tai breathed slowly.

"You're going to worship it, understand?"

He nodded as she slowly lowered her pussy down so that it brushed against his lips. A jolt shot through her the moment she felt his wet tongue touch her labia. Slowly and with a hint of what she assumed was nerves, Tai began to lick her. She groaned as he gently ran his tongue all over the outer regions for a minute. Her hands found her breasts and she began to play with her nipples. Involuntarily, her back arched when his tongue slipped between the lips of her labia and caught her clitoris.

"Urgh," Kari moaned, "yes, just like that, Tai. Worship your sister's clit." Having seemingly grown in confidence, her brother began to quickly flick his tongue, sending shots of pleasure through her like they were coming from a machine gun. "Urgh!" she pressed her pussy firmly against his mouth when one particular jolt felt like being hit by a shotgun shell at close range. "Mmph!" it was a struggle for her to contain her screams of delight, but somehow, she managed to limit it to a series of muffled moans.

"Ahhh, that's it, Tai. Put your tongue inside your sister." Her brother readily complied as she felt his tongue leave her clit and slip into her opening. It was like nothing Kari had ever experienced before. She had plenty of experience of her own fingers moving around inside her, but this was something else entirely. In and out he probed for a few moments before withdrawing. He then took her completely by surprise. Pressing his lips around her clit, he sucked, hard. Kari's fingernails dug into her breasts and she almost shrieked as her back arched again and her eyes found the ceiling. Only instead of white tiles, she saw a burst of colour as her orgasm ripped through her like a bolt of lightning. Her muscles tensed, almost to the point that it hurt, before she felt them relax and the euphoria set in. Her breaths came in short, sharp pants and it took several moments for her to come to herself and remember that Tai lay bound beneath her. She could still feel his warm tongue circling her clit and she had to forcibly withdraw her pussy from his face; lest the pleasure start to build again.

"Good boy," she whispered, an incandescent grin plastered across her face. She reached a shaky hand behind her and found her brother's penis; still solid. She smiled, "looks like you enjoyed that almost as much as I did. I suppose you want to cum now, yes?"

Tai too, it seemed, was breathing heavily, as it took him a moment to moan, "yes." He must have put a lot of effort in pleasuring her, Kari reasoned. Now it was time for her to reciprocate.

It was slightly difficult for Kari, owing to her limbs still feeling slightly shaky, to turn herself around so that her head now hung just above her brother's cock and her pussy inches from his face. Lowering herself down, she ran her tongue from his pubes right up the length of his shaft to the tip. He let out a stifled moan. She toyed with him for a bit, flicking her tongue here and there and motioning to take him into her mouth, only to pull back at the last moment, as she waited to see what he would do. She'd purposely chosen this position to see if he would pleasure her back. It didn't take long for him to take the hint. The moment she felt his tongue against her labia, she pressed her lips against the tip of his penis and took the head inside.

Kari slowly began to suck her brother's cock, as she felt him start to flick her clit with his tongue. Up and down his shaft she bobbed, taking him slightly further in with each movement. She heard him moan into her pussy before doubling down on his efforts to please her. She began to pant around his throbbing member, jolts of pleasure starting to hit her thick and fast. Coming up for air for a brief moment, she swallowed a large breath before going back down on him. Lips forming a tight seal around Tai's dick, Kari thrust her head down until she felt his pubes tickle her chin.

"Urgh!" Tai moaned from behind her, his voice only muffled by the fact that his face was buried deep inside her pussy. He responded by starting to suck on her clit.

Kari let out a slight yelp when she felt his teeth get a little too adventurous and nibble at her. He was so going to pay for that. Starting at Tai's pubes, she lightly dragged her teeth from base to tip, succeeding in eliciting a delightful, "argh." She smiled to herself and returned to playing nice. Soon both siblings had descended into a sweaty, panting mess, waves of pleasure cascading over them. With one final push, Kari deepthroated her brother, just as he sucked and licked her clit at a furious pace. She felt her orgasm explode inside her like she'd just had a rocket shot straight through her. Inside her mouth, she felt Tai swell and stiffen and only at the last moment did she realise that… bang! Her brother's penis virtually exploded, like a new year's firework, inside her mouth. Hot, salty cum hit the back of her throat and she almost gagged. Unfortunately, with Tai's still throbbing penis blocking the exit, she had no choice but to swallow. It took several moments, primarily due to the fact that her body had just been rocked by her own orgasm before she was able to lift her head and let his penis slip out.

Kari took a deep breath of the rooms warm sticky air. That had been intense. Limbs shaking, she struggled to climb off of her brother. Catching her first glimpse of his face told her that Tai had enjoyed himself; a lot. His eyes were glazed, his cheeks redder than his own backside and a blissful expression was plastered all over his face. She reached out haphazardly and struggled with the knots in the legs of his trousers, but eventually managed to release his legs; they flopped down onto the mattress. It took a minute or two to free his wrists. Once she had freed him, she rolled him over onto his side, pulled the blanket over them and wrapped an arm around him from behind.

"Did you enjoy that?" Kari whispered in her brother's ear, her tone still holding some degree of mischief and seduction.

It took several moments before Tai responded with a slightly shaky, "yes."

Sensing the degree of instability, Kari pressed her body closer, intertwined her legs with his and gave his chest a light squeeze. What they had just done, even she did not know. However, her instincts told her that the most important thing to do at the moment was to ensure Tai felt safe and secure. Hence, she dropped the sexy tone in favour of her kind, caring and compassionate one when she asked, "do you feel ok?"

"My legs are a bit stiff but other than that…" he trailed off and Kari could tell that he was having trouble processing what they had just done… no, what she had just done to him. Had she just made a serious mistake?

"We don't have to do anything like that ever again if you don't want to," she replied quickly.

A silence followed for a minute or two, as the siblings lay cuddled under the blanket. And Kari was just beginning to worry that she might have done something to ruin their whole relationship, when Tai uttered, "what if I enjoyed it?"

Able to sense the uncertainty and trepidation in his tone, she gave him a reassuring squeeze. "Your brain's having trouble trying to process how you could possibly have enjoyed that," Kari then said, cutting straight to the point. Being open and honest was probably the best idea at present.

"Is it that obvious," her brother replied with a semi-hollow laugh.

"It's ok for you to feel conflicted," she let out a light laugh of her own, "I do too."

Tai craned his head around to look at her. "Really?" his face was a mix of confusion and disbelief. "You're just saying that to try and make me feel better."

Kari looked him straight in the eyes, "it's true. I've never fantasied about anything like that. Hell, I don't even know what it was we just did. And I certainly didn't plan it."

"But you seemed so sure of yourself every step of the way. And you're honestly trying to tell me that you didn't have all this planned, starting with that bit of footsie at dinner?"

She blushed slightly, having forgotten that this whole thing had started at the dinner table. "Honestly, that was a purely sporadic piece of fun that started because I was annoyed that you had virtually ignored me since you came home. However, when I knew you were away to run off to your bedroom for a wank, I decided I wanted to play with you a little more. So, I made sure I got in here before you had a chance to pop. Everything that happened after that… just happened."

Tai nodded his head in acceptance of her answer. Had it been anyone else, she suspected that he would not have believed her. However, such was the level of trust that existed between them, that no further explanation was required. "I think," her brother began tentatively, "that it's called BDSM. I'm sure I've seen the term floating around the internet in relation to certain porn videos. Only don't ask me what it stands for as I have no clue."

Kari gave him a wicked smile, "jacking off to internet porn, Tai?" she tutted.

Tai began to blush, perhaps only having just realised what he'd admitted to. "It's not what you think," he said hastily.

She laughed. "I bet it's exactly what I think. However, I'll wager none of the girls in your videos turn you on quite like I do."

Her brother managed to regain control of himself. "Not even close," he said with a smile as he rolled over to face her. "So, what now?"

"I don't know," Kari conceded, giving him a light kiss. "I think what's happened tonight is a lot for both of us to process. So, let's cuddle for a while and we can talk about it tomorrow."

"Do you want to stay the night?" he asked with a light chuckle.

"If you'll have me. However, I'll need to get back to my own room before mom and dad wake up in the morning."

Tai nodded in agreement, before leaning forward to give her a kiss. Rolling onto her back, Kari cradled her brother's head into her breast, having to brush his bushy mass of hair backwards. He came willingly, putting an arm around her. Gently she began to stroke his cheek. "Goodnight, Tai," she whispered.

"Goodnight, Kari."

She waited until her brother had closed his eyes before following suit. Thoughts about that evening's antics raced through her brain, but she ignored them as she focused on Tai's breathing. Her brother was all that mattered and he belonged to her.

##

Authors note:

Thanks for reading this little interlude, I hope you all enjoyed it. If so, please leave a review, especially if you have an opinion on whether it should become canon or not. Either way, if people are interested, I wrote the bulk of a similar scene between Matt and Teiko after I finished part three. In it, we find out exactly what caused Matt's eyes to pop out of his head at the end of All lovers are deranged and what happens afterwards. If people want, I could be persuaded to finish it and post it as another interlude (cannon or otherwise). Finally, for those of you patiently waiting for part five, I can tell you that I have it (along with the rest of the story) planed out. However, I have not made any significant headway with it yet, due to other commitments. If I am unable to find a chunk of time to dedicate to it, I might consider uploading it as and when I have time to write singular chapters, now that I know exactly where the story is headed. Thanks once again and I'll see you all later.