Posted originally on the Archive_of_Our_Own at https://archiveofourown.org/
works/8797438.
  Rating:
      Explicit
  Archive Warning:
      Rape/Non-Con, Underage
  Category:
      M/M
  Fandom:
      Naruto
  Relationship:
      Hatake_Kakashi/Uchiha_Sasuke
  Character:
      Hatake_Kakashi, Uchiha_Sasuke
  Additional Tags:
      Spanking, Rough_Sex, Cock_Ring, Genjutsu, Top_Kakashi, bottom_sasuke,
      KakaSasu_-_Freeform, Why_can't_I_stop_writing_this_pairing, Dubious
      Consent, PWP, But_there_might_be_a_little_plot_now, but_mostly_still_porn
  Series:
      Part 1 of Seal_the_Deal
  Stats:
      Published: 2016-12-09 Words: 6703
****** Damn Genjutsu ******
by awkwardlyhides
Summary
     Kakashi's got a deal for Sasuke. Will he accept it?
     Or alternatively, Sasuke blames much relating to Kakashi on genjutsu.
Notes
     Disclaimer: Kishimoto wrote Naruto, not me.
     Don't be like Kakashi, guys.
     I'm sorry did I say my next fics were gonna be light and fluffy?
     Haha, I guess my hand slipped because this monster just popped out.
     And out of my stories so far, I think this one's probably the best,
     even if it's not as kinky as my last one.
     Hope you all enjoy.
See the end of the work for more notes
===============================================================================
It had started off first with the staring. Incessant, blatant, intense,
staring. Sasuke hadn’t noticed at it at first. Being the last Uchiha, someone
or another was always staring at him, so he had been used to it. Still, he had
a hard time believing it had taken him an entire week to notice it. That man
was a jounin, yes, but still, a  week?
There had to be genjutsu involved, he decided. Yes, that must be it, genjutsu.
That would explain it.
But once he did notice it, no matter how much he tried, he just couldn’t ignore
it anymore.
Kakashi was always pointedly, lecherously, downright obviously staring at his
ass. That’s right, fucking Hatake Kakashi was checking his ass out, and Sasuke
had no fucking clue what to do about it.
The man was his sensei, for crying out loud! Sasuke had been absolutely
confused at first, puzzled as to why Kakashi was specifically staring at him
all the time, thinking that maybe Naruto had actually managed to pull off a
prank on him or something, but no. If that had been the case, Sakura would have
beat Naruto up already, but that hadn’t happened.
Meanwhile, Kakashi had just kept on staring and when he noticed that Sasuke had
noticed it, he didn’t stop. Oh no, on the contrary, he had stood up, ambled
behind Sasuke, and stood there.
Sasuke had been tempted to punch the man right then and there, but things had
already been strange enough by then to unbalance him. In that situation, he had
decided, it was best to keep quiet.
But Kakashi just hadn’t stopped staring, his gaze practically burning a hole
into Sasuke’s shorts.
And then-
Kakashi had the damned nerve to  grope  him! Sasuke had gone stock still, his
mind trying to process this turn of events.
After that, the damned bastard had just  walked away,  casual as you please.
You wouldn’t even suspect he had just sexually harassed someone with the way he
walked. If not for the tingle left behind, Sasuke himself would have thought
everything had been a hallucination. But the feeling of his teacher’s hand
squeezing his ass lingered, and... Sasuke hadn’t known then what annoyed him
more, the fact that Kakashi had groped him, or the fact that he treated it like
an everyday event, or the fact that Sasuke actually liked it.
He settled for ignoring everything, and desperately pretended that nothing was
wrong.
Sasuke lasted for another three days before he cracked. And in those three
days, groping did become a everyday thing. Whenever he could, Kakashi would
steal touches, between missions, on missions, while Sakura beat up Naruto
again, during lunch or breaks. Sometimes it would only be a poke, sometimes, a
slap, and in other times, squeezes.
It was maddening, frustrating, and leaving him flustered every single time, and
he didn’t understand why he liked it. Sure, Sasuke was aware that Kakashi was
seen as moderately attractive, but that didn’t mean he was attracted to him!
...Right?
Anyway, Sasuke had no idea how his other teammates didn’t notice. Sure they
were oblivious, but Kakashi couldn’t have been more obvious if he tried. It had
to be a genjutsu or something.
Actually, his psuedo-attraction was probably a result of genjutsu, too!
Fucking damn genjutsu users to hell,  Sasuke thought furiously as he drove
another kunai into the tree, panting. He was training by himself in the Uchiha
compound, so thankfully this area was Kakashi free, so he could finally enjoy
some peace and quiet and no sexual harassment.
Such, sweet, sweet bliss. If he could switch teachers somehow, he would do it
in a heartbeat, but alas, switching teachers was not so easily done. And he
knew Kakashi was a respected jounin, while he was the slightly maybe a little
mentally unstable Uchiha kid. They wouldn’t just switch him out like that.
But Sasuke could handle it, the groping, the staring, the harassment, if only
Kakashi would be a proper teacher. If Kakashi actually did his job properly and
taught them something, then it wouldn’t be so bad. Everybody knew all jounin
were a little eccentric, and Sasuke was perfectly capable of standing it if
Kakashi actually performed the duties of being a teacher.
He sighed as he finished throwing the shuriken, all off them landing at the
targets. But Kakashi wasn’t teaching them properly, and there was honestly
nothing Sasuke could do about it but endure and train on his own. He eyed the
targets critically, noting that a few of them hadn’t landed exactly on the
bulls eye. Grimacing, he realized that he needed to fine tune his aim, although
the force was acceptable.
Training by himself was difficult, since there wasn’t another that he could ask
for help from, but training with Kakashi was honestly more of an annoyance than
training by himself. Here, at least, he was free from sexual harassment.
...Then why did he feel a hand groping his ass again?
Sasuke turned around to see Kakashi lazily reading his book with one hand, and
groping him with another. Sasuke twitched. He hissed, “Kakashi, what the hell
are you doing?”
With a crinkle of his eyes, Kakashi replied not taking his hand off, “Reading.”
Sasuke cracked. This was supposed to his sanctuary, his Kakashi-free time, and
the man had just crossed the line.  That man was going to die.
Growling as he twisted his body around, Sasuke used the shuriken in his hand as
he tried to hit Kakashi, forcing the man to finally let go even though the
shuriken missed. Sasuke didn’t even have a moment to enjoy his victory, for in
the next second, he suddenly felt Kakashi slam into him behind and grab his
hands, forcing him into the ground. Sasuke grunted, trying to heave the older
man off him, but it was useless. His hands were pinned to the ground, and
Sasuke turned around his head, ready to spit in the man’s face if need be and-
Was the man actually just sitting on him?! Kakashi appeared to be entirely
relaxed, sitting on him as he continued to read the book, seemingly engrossed.
Sasuke twitched. “Get off and get out,” he grit out in annoyance.
“Shh, I’m getting to the good part,” Kakashi chided distractedly, placing the
book on his knees. His other hand, now free, snaked over to the right to land
Sasuke’s rump.
Please don’t tell me-
His hand began to knead the flesh underneath, squeezing and relaxing and then
squeezing again. Sasuke nearly whimpered, that felt so good, but at the same
time, it was absolutely humiliating. Kakashi had taken him down in an instant,
reminding him just why the man was a jounin. But that only proved to Sasuke
that if the man would just try to properly teach them, he could be amazing, but
he was just so damned useless.
Sasuke made a strangled noise as Kakashi gave a particularly hard squeeze and
let his head hit the ground.
“Anything wrong, Sasuke?” Kakashi finally asked, looking up, hand pausing in
its motions.
“Yes,” Sasuke answered flatly, though his voice was a tad muffled. “You.”
“And what exactly is it that is wrong with me?” Kakashi replied, sounding
amused.
“Everything,” Sasuke hissed irritably. “You're absolutely annoying, always
hours late, wasting our time, you get the most deliberately annoying missions
for us which you don't even help with, you never train us like a teacher is
supposed to do,  and  you've been sexually harassing me, you bastard!”
Kakashi seemed to just get more amused with each word of the rant. “You call
this sexual harassment?” He practically purred, kneading the flesh beneath his
hand.
Sasuke squeaked, not liking where this was going.
Kakashi smirked, and slipped his hand under Sasuke’s shorts. “ This  is sexual
harassment,” he continued as a finger wiggled between the crack and poked at
Sasuke's asshole.
The boy in question had gone still, eyes wide and breathing almost stopped.
“You didn't even ask for me to stop, Sasuke,” Kakashi murmured, continuing to
circle the hole with a finger. “Tell me, did you like it?”
Sasuke couldn’t even breath, but those words shook him out his stupor. He
struggled anew, blushing heavily and shouted, “Get off, bastard!” Maybe he had
liked it a little, but didn’t mean he was going to let Kakashi know that.
With a sigh, Kakashi pressed down and the tip of his index finger slipped
inside, instantly causing Sasuke to still.
What the hell was Kakashi doing? They were out in the open for anyone to see,
didn’t he care a whit about his reputation? But no, Sasuke realized, they were
in the Uchiha compound. Literally no one came here except for him, and even if
someone did, Sasuke would bet that Kakashi would be able to sense it from a
mile away. He had come here to be alone, but that was proving to be a mistake.
“What do you want, Kakashi?” Sasuke asked, tense.
“Finally realized the situation, did you?” Kakashi said, almost approvingly,
and his hand slipped out of Sasuke’s shorts.
Sasuke didn’t dare to exhale, not quite sure what might set Kakashi off, and
stayed quiet.
Patting Sasuke’s head mockingly, Kakashi continued, “Don’t worry Sasuke, I
won’t do anything you don’t agree to.”
Sasuke’s eyes narrowed as he replied, “I didn’t exactly agree to being randomly
groped or being sat on.”
“You didn’t exactly object either,” Kakashi pointed out.
“And what exactly could I say in front of the others? And I distinctly remember
telling you to get off me,” Sasuke bit out.
“You were being rude,” Kakashi said flippantly.
“And you weren’t?” Sasuke countered.
“I am your sensei, Sasuke. I can handle your education however I want.”
“And you’ve taught us a grand total of nothing.”
Kakashi didn’t reply immediately, merely tilting his head and giving Sasuke a
thoughtful look. “Tell you what, Sasuke,” he drawled, a wicked gleam in his
eyes, “How about I teach all you need to know, anything you want to learn?”
Sasuke replied immediately, “Bullshit. I have no doubt you could teach, but you
haven’t taught us anything yet. Why now?”
“I think you know already Sasuke,” Kakashi murmured, his hand lingering over
Sasuke’s bottom.
“You want me prostitute myself for knowledge?” Sasuke said dryly. Though to be
honest, he wasn’t that opposed to the idea, if only to get stronger. Nothing
else mattered.
“Hmm, not exactly,” Kakashi said. “What I want is the ability to push you to
whatever extent I desire, however I desire. I don’t like the idea of having to
limit myself in teaching you see.”
“What a flowery way to put it,” Sasuke said flatly, gears turning in his mind.
So basically, Kakashi thought the current teaching methods were soft, and
refused to teach by those rules. And well, couple generations back, teacher
student relationships had been common... “Why me? Why not Naruto or Sakura?”
Kakashi gave him a look. “You honestly think they could even handle my
proposal?”
Sasuke winced. Sakura would run away screaming, and Naruto would have a mass
freak out as well. “Point. Was the sexual harassment really necessary, though?”
“Just getting you used to it,” Kakashi said innocently, causing Sasuke to scowl
at the implication. “But,” Kakashi continued, adopting a serious tone, “Do you
really think people wouldn’t use this against you?”
“I would have dealt with it then,” Sasuke retorted.
Kakashi narrowed his eyes. “Like you dealt with this?” he asked dryly, sharply
swatting his hand down on Sasuke’s ass. “Or this?” he continued, slipping his
hand inside to ruthlessly probe at Sasuke’s hole, causing the boy to let out a
sharp hiss. “This is a weapon, Sasuke, one that will be used against you unless
you control it.”
“I get it, I get it! So stop, already!” Sasuke protested.
“Do you accept my offer?” Kakashi said softly, but his eyes were hard.
“I-” Sasuke started, not quite sure what to say. This wasn’t exactly the most
ideal setting, but to gain strength… “No one can know. If you accept that, I’ll
agree.”
Kakashi spent a moment considering it, then nodded. “Good. Then let’s start.”
Quickly, he yanked down both Sasuke’s shorts and boxers in one go down to the
boy’s knees, leaving his butt exposed.
“What,  now?!”  Sasuke yelped, trying to squirm away.
Kakashi arched an eyebrow. “When else? A shinobi must be prepared to adapt to
new, sudden situations, Sasuke. Or have you forgotten such a simple thing?”
Glaring, Sasuke tried to find a retort, but couldn't.  Probably a genjutsu,  he
thought darkly. Instead he grit his teeth, and said stiffly, “I understand.”
“Good,” Kakashi replied, patting his head before he stood up, causing Sasuke to
let out a hiss.“On your hands and knees, Sasuke.”
Sasuke hesitated. Sure he had agreed, but moving so quickly… “What are you
going to do?”
“Nothing I haven't done already,” Kakashi answered, amused. “For now, anyway.”
No sex,  Sasuke thought in relief. But hold on a sec, that meant…
A hand softly caressed his exposed ass, cupping them gently. “You’re
surprisingly more obedient than I thought you'd be,” Kakashi remarked, his
gentle touch turning into a squeeze.
Resisting the urge to growl, he instead replied coldly, or as coldly he could
manage in his state, “You had better make it worth my while.”
“Trust me,” Kakashi purred, leaning forward so that he was bent over Sasuke. “I
will.” After a tense pause, for Sasuke anyway, he stepped back and said mildly,
“But first, tell me, Sasuke. Do you know how many times you’ve called me a
bastard today?”
Sasuke swallowed, clenching his hands slightly. Technically, the further
Kakashi was from him, the safer he should feel, and it wasn't like the man was
yelling at him. But somehow, right now, he felt really dangerous. The air felt
heavy, like there was a pressure there that hasn't been a second before.
“Tell me, Sasuke,” Kakashi repeated, voice sharper this time, and Sasuke
flinched.
“A lot,” he said, trying to keep his voice level. Was that the right answer?
“Twenty-three times, to be exact. Do you know such disrespect was a heavily
punishable offense twenty years ago? Pity that law was repealed,” Kakashi
mused. Then his voice turned sharper, “Let me give you a taste of of that.”
Sasuke barely had time to breathe before something lashed against his left side
of his ass with great force, almost causing him to fall. He bit back a scream,
the harsh sting of what he now recognized as a belt had taken him by
surprise.This was nothing like the teasing touches that he had felt so far, and
he got the feeling that is was only going to worsen.  I’m fucked,  he thought,
realizing acutely that there was nothing he could do to get out of this.
Because honestly? It didn’t matter what Sasuke wanted, Kakashi had wanted
something from him, and he was going to take it no matter what Sasuke did.
There was, to put it simply, no escape.
A mocking, gentle caress traced where the blow had landed. “Twenty-three
strikes should do it.”
Bastard,  Sasuke wanted to say, but swallowed the urge to instead brace
himself. It was what had gotten him into this mess in the first place anyway.
Again, the blow came and landed, this time on his right. Twice more it landed,
this time diagonally across his ass, and Sasuke’s breathing became labored.  I
can’t do this,  he realized, bowing his head. It  hurt,  but Kakashi didn’t
give him a chance to object, landing lashes in quick succession until his head
leaned down so far it pressed against the ground. Pain blossomed across his
back, clouding his mind. There was nothing enjoyable about  this.
“Ah…”
The sound of the lashes echoed humiliatingly across the clearing, and he
desperately prayed no one was there. Tears burned at his eyes, and his whole
body shook and trembled, covered in sweat. He whimpered helplessly, unable to
do anything.  It hurts,  he thought.  Stop. Please, stop!
A few landed dangerously close to his dick next, causing him to shudder. He
knew that the belt wouldn’t land anywhere Kakashi didn’t want it to, but it was
so close.
“Spread your cheeks,” Kakashi ordered, pausing the strikes.
“What…?” Sasuke asked, voice tight, distracted by the way his ass was on fire.
Immediately, a lash landed across his backside, making Sasuke cry out.
“Don’t make me repeat myself,” Kakashi said mildly. “Spread. Your. Ass.”
I don’t want to!  But, as Kakashi had just proved, not listening would just
make it worse. Gritting his teeth, he gingerly put his weight on his head and
shoulders, and reached out with his hands to touch his ass, then immediately
let out a hiss as pain erupted at the touch. Unbidden, a sob broke through his
facade before he hastily suppressed it. “I… can’t…”
“Then you’re weak,” Kakashi said coldly, and he flinched.
For a moment, the two of them stood frozen, then Sasuke did has he was told and
exposed his crack and hole to the air.  Let this end,  he prayed, cringing
through the pain.
“Don’t let go, Sasuke,” Kakashi ordered. There was a whish in the air as the
belt came down, landing right over his hole, and it was all Sasuke could do to
hold on as the lashes rained down. Since his hands were otherwise occupied, his
body wasn’t really stable, and shook with each blow that landed.
Finally, with a crack the belt landed on his thighs, causing his legs to buckle
and then finally collapse, leaving him a panting heap on the ground. The blows,
too, ceased. He heard a small thud, signalling Kakashi dropping the lash.
It’s over,  Sasuke thought in relief, slumping into a boneless pile. He was
exhausted, and he felt as though he could sleep for a week, but adrenaline kept
him awake. His ass was still on fire, and probably would stay on fire for the
rest of the week, but it was over.
Kakashi crouched beside him and gently carded his fingers through his hair.
Sasuke relaxed further.  It feels surprisingly nice,  he thought. When was the
last time someone had touched him like this? ...Not since before the massacre.
“How much does it hurt?” Kakashi asked softly.
“A lot,” he muttered, ashamed, but Kakashi merely hummed in reply. Sasuke let
his eyes shut, tired and ready to give up. Why did he ever—
Suddenly, something gripped his ass tightly and the pain he was in exploded
exponentially. His eyes flew open, and unbidden, a scream flew out of his
mouth. Gasping, he twisted his head to see Kakashi squeezing the life out of
his poor ass, staring indifferently at him.
“And how much does this hurt?” Kakashi asked just as indifferently. His fingers
tightly gripped Sasuke’s ass, and his nail dug into the flesh, leaving
indentations.
“Stop it!” Sasuke cried out, tears spilling.
“Did you think it was over, Sasuke?” Kakashi asked, something like a dark
amusement colouring his voice.
Yes,  Sasuke thought. Surely the twenty three lashes were done right?
“You weren't even counting, you know, so how did you expect to realise whether
it was finished or not?” Kakashi asked calmly. “Such a lack of observational
skills will get you killed. I think twenty-three more will help you remember
it, don’t you? ”
Blanching, Sasuke shook his head. “I can't—”
“You will,” Kakashi interrupted, releasing his hold only to drag Sasuke over
his lap.
“No,” Sasuke begged, getting desperate. He struggled to squirm out of Kakashi’s
hold, only to realize he was well and truly caught. A distressed noise escaped
his throat, and then Kakashi’s hand came down, striking against bare skin.
Smack!
Sobbing, Sasuke pressed down,trying to get away, but there was no escape. The
smacks rained down, striking true each time and leaving a trail of fire on his
skin. One after another, they blended into each other till the only thing he
could differentiate them by was the sound as flesh struck flesh.
Slap, slap, slap.
The only thing he could do was lay there powerless in Kakashi’s grasp, unable
to do anything but take it, and simply cry. Tears flowed unhindered down the
sides of his faces to the ground below as the pain from his backside radiated
across his body.
Slap.
Even though these were much lighter than the belt strikes, he realised. And
yet… Why did it hurt so much? Fuck, if he had lasted through the belt strikes,
why was he sobbing like a baby through this? How could he be so  weak?
He clenched his hands into fists and struggled to gain control of himself. Yes
it hurt, yes he cried, yes Kakashi was a total jackass, but he needed to get
over it already if he wanted to survive. The world didn't tolerate the weak,
and he doubted Kakashi would either. Not if it was him, at any rate.  Control,
he reminded himself as his breath hitched when a strike landed at a
particularly sensitive spot, nearly breaking apart what little control he had
regained.
But it didn't continue, and Kakashi’s grip on him loosened.
Sasuke didn't dare breathe, well aware that last time Kakashi had merely lulled
him into a sense of false security only to destroy it. And he was pretty sure
that Kakashi had implied for him to count the second time, and he had pretty
much failed that.
“You’re doing well,” came Kakashi's neutral voice, lightly tracing a finger
across Sasuke’s ass. It burned too, but not much, and it reminded Sasuke of the
teasing touches Kakashi had stolen before, the ones he liked. He let out a soft
sigh, but didn't relax.
Fingers carded through his hair, and Kakashi spoke dryly, “I won’t hit you
again, Sasuke. Can't have you breaking, you know.”
“You aren't moving, though,” Sasuke pointed out warily. Though his teacher’s
words had been casual, it still sent a slight shiver down his spine; somehow,
he got the feeling Kakashi wasn't joking about the breaking part.
“Why, Sasuke,” Kakashi drawled, flipping him over in one smooth movement so
that he was straddling him, causing the boy to let out a hiss as his ass
pressed down uncomfortably onto the grass. With a wicked smile which could only
be seen through a slight impression in the mask, Kakashi continued, “That's
simply because we aren't done yet.”
Then, Sasuke jerked up as his shirt literally tore, exposing him further. He
hissed as his back thumped against the ground again, and Kakashi took the
chance to throw off his shorts completely. “What-”
“Here’s a lesson for you,” Kakashi interrupted silkily, sliding smoothly back
into place over Sasuke.
Sasuke snarled, a hundred percent done and maybe a little fearful too, well
aware of what Kakashi’s actions meant. His heart thumped, beating in a fast
pace in rhythm with his harsh breathing. Glaring at his teacher’s face, he
tried to smack it, only to find his hands jerk against rope.  When did he–
“If you’re quite done, Sasuke,” Kakashi said softly, sounding bored, his weight
a incessant pressure. A hand reached forward, stroking Sasuke’s face in what
might have been misinterpreted as a loving gesture and wiping away the remnants
of his tears.
Sasuke almost managed to bite him.  Almost,  he thought bitterly, hands
twisting around the rope, which, as a quick glance backwards proved, was tied
to a root of the tree.
“Feisty,” Kakashi drawled as he took off his vest and gloves.
“Are you kidding me?” Sasuke said hoarsely, voice a little rough from crying.
“Nope,” the bastard replied cheerfully.
I’m going to murder him,  Sasuke decided. Slowly. Painfully. With Tsukoyomi, if
he ever learned it. “What the hell do you think you’re doing, bastard?” he bit
out, only realizing his mistake once it had slipped out. Tensing, he warily
eyed Kakashi.
Arching an eyebrow, his teacher replied, somewhat amused at the insult,
“Really? Are we going to do this again?” He reached under and gave a little
squeeze to Sasuke’s ass, causing the boy to grimace.
It’s not like this can get any worse,  Sasuke reasoned.  He’s already planning
on fucking me anyway.  Then he spit on Kakashi’s face. Or tried to, at any
rate; Kakashi, being the jounin he was, simply tilted his head and let it fly
past.
“Far too feisty,” Kakashi decided. Sighing, he asked he rubbed his index finger
against Sasuke’s entrance, “Why must you make is harder for yourself?” With his
other hand, he reached into a pocket and brought out a small circular plastic
band.
Sasuke glared through puffy eyes, almost growling. “Shut up.”
“Now, that would be no fun,” Kakashi remarked with a smirk as he snapped the
cock ring around the base, causing Sasuke to stiffen as he realized what
Kakashi intended.
That complete and utter bastard!  Sasuke seethed internally.
“I wouldn’t have had to do this if you had been cooperative,” Kakashi said
mildly, then held out three fingers in front of Sasuke, earning him a
disbelieving look. “Suck them good, Sasuke, or I won’t stretch you at all.”
At that, Sasuke faltered, torn between swallowing his pride and taking the
easier option or setting himself up for a world of pain.  Damn it!  he swore
and reluctantly opened his mouth, eliciting a smile from Kakashi.
It felt a little weird, having something foreign in his mouth, but it wasn’t
too bad, considering it wasn’t choking him or anything and Kakashi seemed
content to let him do whatever and not interfere. He sucked on the digits,
grimacing at the taste of sweat and leather that clung to the hands, but
slathered them judiciously with saliva nonetheless. He didn’t want it to hurt
more than it had to.
Kakashi, meanwhile, watched him with a smirk that could be seen through even
the mask and half lidded eyes, clearly enjoying this. Sasuke was tempted to
bite hard on his sensei’s fingers to wipe that smirk clean off, but didn’t,
well aware that this position made it an excellent position to break someone’s
jaw and that Kakashi would have no hesitations against doing it.
“Enough,” Kakashi said at last, and with relief, Sasuke let go. Still, what was
coming was perhaps worse, so it wasn’t like this was exactly a good thing.
Kakashi moved just enough to flip Sasuke over onto his stomach, then, without
any warning, shoved in two fingers inside Sasuke.
“Fuck!” Sasuke yelped in response to the sudden stretch. It wouldn’t have been
too bad, if Kakashi hadn’t done it so suddenly and roughly or if his ass didn’t
still ache from the spanking, but he had and it did, and Kakashi wasn’t
stopping either. The fingers wiggled inside, brushing up against his inner
walls and making him shiver. They scissored, stretching him further, and
Kakashi chuckled.
He asked, tracing patterns on Sasuke’s back with his other hand, “This is your
first time, isn’t it?”
“O-of course,” Sasuke panted, whimpering as the digits pressed further inside.
Futilely, he pressed against the ground, trying to escape. “I’m -ah- twelve,
what d-did you ex-expect?”
Swiftly, Kakashi pulled out his fingers almost entirely, then shoved them back
again with an additional finger, causing Sasuke to swear again. “Don’t get too
sassy, now.”
“You absolute fucking bastard!” Sasuke snapped, feeling the sharp burn at the
stretch. He shuddered, and a bead of sweat rolled off his chin.
Sighing, Kakashi replied, “You really don’t learn do you?” before curling his
fingers and scratching his nails against the inner walls of Sasuke’s anus,
causing the boy to shudder again at the sensation.
“Ah… Shut… up,” Sasuke managed to say.
“Your body disagrees,” Kakashi pointed out lazily, grasping Sasuke’s slowly
hardening dick.
Was kinda hoping he wouldn’t notice that,  Sasuke thought with a grimace that
turned into a gasp as Kakashi gave a few tugs in unison with the pumping of his
fingers.
“Ah…” Sasuke’s breaths came out harshly. The pressure built as under Kakashi
skillful hands, Sasuke's dick hardened fully. A cloud of pleasure settled over
Sasuke’s mind, and even the hardness that he could feel pressing against his
thigh barely made him flinch. Unbidden, a whine slipped out as his sensei gave
a particularly rough tug.
“I see you’re enjoying yourself,” Kakashi remarked, amused, but Sasuke couldn’t
care less. The tipping point came as Kakashi’s fingers curled just so, hitting
a spot that sent a jolt of pleasure through his body. He shuddered as the
pressure built, ready to spill and-
-Stopped.
Blinking slowly, Sasuke made a confused, frustrated noise.  The cock ring,  he
realized, then let out a growl and twisted his head around. “Kakashi…”
“Did I forget to mention?” Kakashi asked carelessly, removing both his hands
and removing something from a pocket and undoing his zipper. “I put a genjutsu
on you, see, and until you break it, I’m not letting you cum. This is supposed
to be a lesson after all. And if you can break one under these conditions, I’m
sure you’ll have no trouble whatsoever with breaking genjutsu ever.”
“You bastard!” Sasuke snarled, tugging at his bonds and wanting, very badly, to
punch in his teacher’s face.
Kakashi simply chuckled, uncapping a bottle and pulling down his pants enough
to slip out his dick. He tilted the bottle, spilling oil over the hard flesh,
causing Sasuke to narrow his eyes.
“Hey,” Sasuke started, twitching.
“Yes, Sasuke?” Kakashi asked lazily, rubbing the oil over his cock to spread in
evenly around.
“If you had lube,” Sasuke continued, somewhat pissed, “Then why the hell did
you make me suck your fingers?”
Kakashi tilted his head and drawled, “Why, Sasuke, it was simply to see you
squirm.”
Livid, Sasuke growled and began to jerk up his leg in an effort to hit Kakashi,
but was summarily stopped by him.
“By the way,” Kakashi said silkily in Sasuke’s ear as his dick rubbed against
Sasuke backside, “If you don’t break it before I cum, I won’t let you cum at
all, even after I leave. You’ll simply stay this way, until the next time I
decide to spend time with you.”
He’s not even joking is he?  Sasuke thought with disbelief, but he didn’t have
much time to think on it before an incessant pressure started against his hole.
Gasping, he shook as the tip Kakashi’s dick breached him.
“Focus on your task, Sasuke,” Kakashi murmured.
“That's, ah, kind of hard to d-do with, ah, a dick sh-shoved up my, ah, ass,”
Sasuke managed to say, whimpering as it inched in agonizingly. The stretch
burned despite how there had been fingers there earlier, and Sasuke was
suddenly glad he had decided to listen to Kakashi before because if it hurt
this much now, how much would it have hurt if he hadn't decided to suck those
fingers?
“Breathe, Sasuke,” Kakashi said soothingly as he slid in completely, hands
gripping the boy's shoulders.
Easy for you to say,  Sasuke wanted to retort, but couldn't even find the
energy to speak. Fuck, he felt so full, stretched to his limits like this.
Right now, Kakashi’s dick was touching places so deep inside him, sending
sparks of pain and pleasure through him. Every little shift only caused him to
hurt more and make little whimpering noises.  How the hell am I supposed to
break a genjutsu like this?
“I hope you're ready, Sasuke,” Kakashi warned, shifting slightly.
“D-don't,” Sasuke tried to say, but the words flew out of his mouths and
Kakashi began to drag himself out. “Fuck!” was only what Sasuke could say as
the dick slowly exited, making him feel like half his insides were being
dragged out with it. His ass felt like a suction cup, desperately trying to
hold on to his sensei’s dick but having it pulled out nonetheless. His hands
clawed for purchase but couldn't get any, tied in ropes like they were.
Kakashi chuckled, and asked breathily, “Enjoying yourself, Sasuke?”
Sasuke would have responded with a ‘fuck you’ but unfortunately for him, all
that came out was a wanton mewl. In response, Kakashi shoved himself back in,
this time with pinpoint accuracy as hit Sasuke’s prostate, ripping a scream
from the boy his back arched in response.
“It all good and all to enjoy yourself,” Kakashi purred, rolling his hips, “but
if you don't break the genjutsu, Sasuke, I'm afraid you won't find your release
at all.”
Sasuke sobbed, dazed from the stimulation, and mind scrambling to make sense of
the confusing combination of pain and pleasure. He couldn’t concentrate like
this. He whimpered, “P-please…”
“Please what?” Kakashi repeated mockingly, grabbing a handful of Sasuke’s hair
to jerk his head back. “Faster? Harder, maybe?” he suggested, knowing well it
wasn’t what Sasuke was asking but speeding up anyway. His thrusts set a quick
pace, slamming into Sasuke with each movement.
“Ah!” Sasuke gasped dizzily, flushed. It felt so good, despite the pain it
caused and aches it was sure to leave him with, but he didn’t want to be left
like this. There was no point in asking Kakashi for mercy, he had no intention
of letting up. The only one he could reply on was himself, but that would be a
little hard to do. He writhed as Kakashi hit his prostate and heard the man
release a small grunt.  It won’t be long now,  he he thought distantly through
the haze, something like panic tickling the edges of his mind.
Chuckling, Kakashi panted, letting go of Sasuke’s hair to instead slip his hand
underneath and twist one of Sasuke’s nipples, “At this rate, the only thing
you’ll learn from me is how to be a good little fucktoy and take it, Sasuke.”
Too out of it to respond properly, Sasuke’s fingers instead curled, digging
into his palm. He hissed as the external pain cleared a little of him mind, and
focused.  Think, think.  Genjutsu, right, he remembered. Since Kakashi had
mentioned there was a genjutsu on him, he didn’t necessarily need to find it,
just disrupting chakra would work right? Relieved at this solution, he started
to create the hand seal-
-only to have Kakashi nearly crush both his hands together. Sasuke screamed, a
little from the throbbing of ass and a little from the his hands.  “Why?” he
asked hoarsely.
Pausing,Kakashi chastised, “Now, now, that would be too easy. Identify it, then
release it. Without a hand seal.”
You’re crazy,  Sasuke wanted to say. How the hell was he supposed to disrupt
chakra without a hand seal? That wasn’t covered in the Academy.
“Now, let’s try again, shall we?” Kakashi purred, emphasizing his point with a
brush of Sasuke’s posterior. “Trust me, Sasuke. You have all the tools you need
to break it,” he continued, lining up his dick with Sasuke’s hole. “You simply
need to apply it,” he finished, plunging into the boy once more.
Biting his lip, Sasuke’s thoughts raced. It was possible to control chakra
without hand seals - required, in fact, for several techniques. But how-
“Fuck!” a scream flew out of his mouth as his sensei bit down hard enough to
bruise at the nape of his neck. His teacher sucked hungrily on it, not even
stopping in his fucking, and Sasuke wondered how he had the control. The sucks
turned into licks, which trailed away up his neck to the lobe of his ear.
“Are you even trying, Sasuke?” Kakashi breathed, finally pausing, his dick
entirely encased by Sasuke’s inner walls.
“Stop...ah, distracting me…” Sasuke panted, focusing inward on his chakra to
figure out where, exactly, the genjutsu was.
“That wouldn’t be fun at all,” Kakashi said huskily, flicking a tongue across
the top of his ear.
Sasuke ignored him, searching desperately for any trace of foreign chakra in
his system, but with Kakashi’s chakra so close by, it was hard. Something
fluttered at the edge of his senses, but it fell away as Kakashi suddenly
jerked back then slammed dead on onto his prostrate. Sasuke gasped, shuddering
at the force as his sight blurred. “F-fucking bastard,” he hissed, certain that
Kakashi had purposefully done so because he had noticed Sasuke was onto
something.
“Do you want me to go easy on you instead?” Kakashi asked mockingly, a hand
caressing Sasuke’s cheek, and Sasuke snarled, jerking away.
“Don’t you dare!” he snapped, mind already racing to find that thread he had
sensed before.
“Well, there’s your answer, isn’t it?” Kakashi replied, starting again. His
thrusts were brutal, going in and out without stopping, shaking Sasuke’s body
with each thrust, and the hand that grasped his cock didn’t really help either.
Sasuke clenched his eyes tight, letting his face hit the ground. His cock ached
for release, and his body begged for relief, for it to simply stop.  Focus,  he
thought. With gritted teeth, he did his best to mute out the sensations of his
body, of each touch and each sting, of each thrust and each ache, and focused
entirely on his chakra.
There!  He thought triumphantly, finally finding it, but it was tainted with
annoyance as he realized what exactly the genjutsu was: the cock ring.  Fucking
bastard,  he repeated in his mind. Above him, the bastard in question grunted
and tensed, and he knew he didn’t have long. He focused, not entirely sure how
it would work without a seal, but flared and twisted his chakra as best as his
could, and sighed in relief as it gave away.
The hand around his dick gave tug just as Kakashi hit his prostate once more,
and Sasuke’s eyes flew open and  his back arched in a soundless scream as he
came, streams of white flying out from his dick like there never had been a
cock ring in the first place. His ass clenched, and in response, Kakashi too
released, dumping his load deep into Sasuke’s ass.
“Fuck…” Sasuke said hoarsely, voice rough from screaming, collapsing onto the
ground. Kakashi followed him, laying down on top without even bothering to take
his dick out. Sasuke grunted, wanting to protest, but not able to find the
strength. Going home and takign a shower sounded nice, but he knew he was in no
position to do so. He felt sore all over and he really would like to be able to
simply fall unconscious here, but it was getting hard to breathe with the man’s
weight over him. “Get off,” he muttered halfheartedly.
Kakashi chuckled, but obligingly slipped out, undoing the restraints on
Sasuke’s arms as he did so. With a sigh, Sasuke rolled onto his back, grimacing
at the discomfort it caused. He looked at his teacher sitting beside, hating
the way he looked entirely too pleased with himself and how freaking attractive
he was. Sasuke thought it was damn offensive how he could still feel a modicum
of attraction towards the man after what happened. 
Some cum dribbled out of his hole, and Kakashi’s eyes were immediately drawn to
it. With a smirk, he scooped it up with his finger, letting the white substance
dribble all over it before brushing it over to Sasuke’s mouth.
Sasuke gave him a look, but nonetheless opened his mouth. His tongue darted
out, tasting bitter taste of Kakashi’s cum as it slipped inside his mouth. He
sucked obediently on the finger, swallowing down the cum as it was cleaned off.
“Such a good boy,” Kakashi praised, watching him with half-lidded eyes, and
Sasuke would have bit him if he wasn’t worried that it might provoke Kakashi
into fucking him again. He settled for a glare and pushing the finger out of
his mouth.
Kakashi sighed, sounding a little disappointed, but didn’t push his luck. He
instead laid his hand over Sasuke’s eyes, and pressed his lips against the
boy’s forehead. “Rest, Sasuke,” he murmured fondly, another hand carding
through his hair. “We’re done for now.”
Sasuke might have tried to protest, but he suddenly found himself overwhelmed
with fatigue, far too much than he had any right to feel. Before he fell into
oblivion, he couldn’t help but spitefully think that it had to be a genjutsu.
Fucking genjutsu.
End Notes
     So, anyone wanna be my beta reader?
     And thank you all for reading!
Please drop_by_the_archive_and_comment to let the author know if you enjoyed
their work!