Chapter Text
“Sensei!“
Naruto and Sakura barely caught themselves as they ran around the corner. Kakashi felt the pounding in his head grow tenfolds and huffed a sigh into his mask.
He placed a protective hand on the closed door in from of him - a clear sign to his two students to not enter the room.
“Will Sasuke be ok? What did the enemy do to him?“
“Sasuke will be fine.“ Kakashi traced the grain of the wooden door under his thumb for a moment. He couldn‘t possibly disclose what Sasuke was going through right now. The boy would attempt to murder him as soon as he recovered.
He could make out little gasps behind the door and knew he would have to watch over Sasuke‘s physical health. There was no telling how the effects would change Sasuke overnight and Kakashi couldn‘t make the two day footslog to Konoha with a sick team member.
“But I will watch him for the night. And you two won‘t disturb him.“
Sakura pulled a face of distaste but backed down while Naruto ground his teeth like a dog, defiances burning in his eyes.
“But Sensei-!“
“Or the team will go back to doing D-rank missions only.“
Naruto yelled out in protest. Sakura balled her fist tight and jammed her team mate in his ribs.
Naruto doubled over, temporarily forgetting what he was screaming about.
“Shut up, Naruto! I‘m not going to babysit dogs again!“
Sakura shook her fist in Naruto‘s face while he whined about his side hurting.
“Go to bed, you two. We‘ll see how Sasuke feels in the morning.“
Kakashi barely saw Sakura dragging Naruto off by the ear before cracking Sasuke‘s door open to slip inside the dim room, moonlight barely flooding the futon on the ground.
It was the nearest inn they could find after rushing out of a battle with two local ninja. They were supposed to retrieve a scroll and head straight back home.
Kakashi sighed heavily. Nothing ever went as planned with this team.
The enemy dashed out the surrounding forest. Everything was under control, Kakashi sensed them roughly fifteen minutes prior and they weren‘t strong.
One of them zeroed in on Sakura who barely jumped back to avoid the solid tonfa. Naruto dug into his kunai holster but Sasuke was faster, appearing before the man. Before the boy could conclude his hand seals, Naruto was yelling something Sasuke couldn‘t make out
But Kakashi could.
“Sasuke, watch out!“
Kakashi - already digging his knee into the captured second enemy - whipped his head up in time to see the enemy throw a ball at Sasuke‘s feet and disappearing in a puff of smoke.
The ball cracked and before Sasuke could move, it burst open. Little shards of what seemed to be hardened mud flew into Sasuke‘s direction as a cloud of purple mist rose in the air.
The ninja pinned under Kakashi chuckled a strangled laugh before disappearing just like his colleague.
Sasuke stumbled out of the purple cloud, coughing and rubbing his eyes.
Kakashi shut he door behind him, turning the lock quietly.
Sasuke laid on his side, blanket kicked off his curled up body as he shivered and tried to even his breath.
Kakashi approached slowly, unsure what the hell to do with the kid now. It‘s been an hour since the attack. Kakashi already managed to get in touch with Konoha but it was no help, nobody could be sent out until tomorrow.
He looked down at the boy. Sasuke‘s eyes were shut tight, hands fisting the sheets, his shirt, his hair. He wasn‘t even sure if Sasuke - alert and cautious Sasuke - even knew Kakashi was in the room right now.
Kakashi crouched down, placing a gentle hand on Sasuke‘s forehead. He was feverish. The boy flinched, slapping Kakashi‘s wrist to get him hand away.
“Don‘t- Don‘t touch me..“
Sasuke‘s voice was hoarse but he finally opened his eyes as Kakashi‘s hand pulled back.
“My body… What‘s-?“
“That smoke bomb that man threw was laced with a poison.“
Sasuke‘s eyes grew big as he turned onto his back. The moonlight caught his face and Kakashi thought he saw real fear illuminated on his features.
“It‘s not lethal. I would say that the side effects are the worst of it.“ Kakashi settled on the floor besides the futon. “It seems that you are under the influence of an aphrodisiac, Sasuke. You know what that means, do you?“
Kakashi watched his students expressions closely. Sasuke already went back into his fetal position - curled up on his side and panting into his sweat soaked pillow.
“Ngh… No. Just leave…“ He dug his face into the pillow and Kakashi wasn‘t sure if no, he didn‘t know what that meant or no, he didn‘t even understand a word he said but Kakashi guessed both.
“I can‘t leave you with a fever this high. Trust me, I‘d rather go too.“ Sasuke didn‘t even react this time, only clawed at his shirt that stuck to him from the dampness on his skin.
“You’re sweating too much. Can you tell me where it hurts?“
Kakashi propped the boy up with one arm in his neck. He knew Sasuke wouldn‘t sit up so he allowed him to flop against his chest as he grabbed the hem of his t-shirt.
Sasuke, subconsciously or not, held onto Kakashi‘s pant leg, nails digging into his teacher‘s thigh. “Everywhere!“ His body heat almost made Kakashi break out into a sweat as he struggled to peel the fabric off his students body. “Stop touching…“
Kakashi tossed the soaked shirt aside and let Sasuke rest against him for a bit before touching his bare shoulder.
Sasuke hissed, the slightest touch against his skin seemed to ache to his bones.
“It‘s hot… Do something or go!“
Kakashi brushed back the boys hair to see his face, strained and screwed up. He was so tense and only losing water if his temperature kept rising throughout the night.
“It‘s not much I can do. The sensitivity will go away when the poison is out your system.“
Sasuke gave a frustrated whine into the fabric of Kakashi‘s vest. He muffled something along the lines of “I can‘t“ but Kakashi really couldn‘t do much. This wasn‘t some kind of trick or test.
Kakashi hated not being able to fix messes.
“We‘ll figure something out, Sasuke.“
——————
Little droplets of water dripped on the floor as Kakashi submerged the washcloth in lukewarm water.
He‘s been trying to cool Sasuke off for over thirty minutes now, wiping his chest and face with water but the internal heat was getting to the usually bright kid.
His breathing was harsh and whiny and Kakashi noticed the clear arousal in the boys shorts.
He doubted that Sasuke felt any actual arousal. The fever was so high that his skin was hypersensitive to everything. The drag of the washcloth seemed to upset him greatly so any pleasure was probably overwritten by aching and burning.
It was purely a bodily reaction.
“Your fever keeps rising, Sasuke.“ Kakashi let the cloth sink into the water bowl before he turned to his student. “Do you hear me?“
He softly grabbed Sasuke‘s jaw, turning his head to face him.
Even his breath was hot, fanning over Kakashi‘s hand in waves, face dewy and flush.
His eyes open by a crack.
“You have to relief yourself.“ Kakashi let go of his jaw, going through the motions to stand up.
“Wha-?“
Good god. Kakashi cleared his throat. If there was any moment to be professional, this was it. “Masturbate. We don‘t know how high this fever can get.“
Sasuke‘s head rolled back around, fingers weakly flexing in the sheets.
For gods sake.
“Sasuke.“ Kakashi crouched back down, taking Sasuke‘s limp hand in his own. “Can you squeeze my hand?“
Sasuke groaned but squeezed, barely enough for Kakashi to feel it.
Ah, fuck.
He was clearly drained, the poison even disturbed his chakra network.
For a moment Kakashi contemplated just sticking Sasuke in a bath so cool off his skin. It was a horrible idea, the Konoha medics would grill him for it but Kakashi couldn‘t just molest a boy to counteract the aphrodisiac melting his brain.
Sasuke whined, neck straining as his head turned further away and Kakashi rubbed a hand over his tired face.
“Alright…“
He shrugged out of his vest and pulled Sasuke across the futon, head laying on Kakashi‘s arm and his body halfway in his lap.
“Do you hear me, Sasuke?“
The boy reacted, turned his head towards him and hooked his fingers into his sleeve to hold onto something.
“I didn‘t want it to get to this but we have to reduce the effects.“
One hand stroked across Sasuke‘s navel and he flinched, hissing at the contact. Kakashi‘s fingers dipped into Sasuke‘s pants and his body attempted to curl in on itself.
“Wha-? Stop!“
Kakashi cradled Sasuke against his body, trapping him as his hand disappeared in his shorts.
“Sorry, kid.“
Sasuke was already straining and hot when Kakashi bumped against his dick. His hand curled around his shaft, the other draped over his mouth before he gave an experimental stroke.
Sasuke cried, almost convulsing from the sudden sensation. His skin was so sensitive that he was already close to tears.
Sasuke‘s hand fisted Kakashi‘s shirt with newfound strength. Kakashi squeezed him lightly but it was enough to make Sasuke drool against his palm.
He was suddenly very happy that he mastered the arts of jerking it quick and efficiently.
Kakashi‘s strokes went easy, slick with sweat and an insane amount of precum. The pressed a thumb against Sasuke‘s head and rubbed against it once, twice before Sasuke came with a strangled moan. And he came a lot.
His body went limp in Kakashi‘s arms, panting and wheezing like he went through intensive training.
“How do you feel?“
Kakashi withdrew his hand, dripping with Sasuke‘s seed and the boy looked angry.
“Worse! I- I can‘t…“
The teacher glanced down at the forming tent between Sasuke‘s legs.
Konoha had no business with aphrodisiac but he did read about it once. Out of pure curiosity. Internal stimuli seemed to work best when dealing with it but Kakashi really really wanted to avoid it.
“Ok…“ He moved Sasuke back onto the futon. “Seems like we have no choice.“
“Huh?“
Sasuke watched out of hazy eyes as Kakashi hovered over him, hands going for his waistband. “S-Sensei.“
They briefly made eye contact. The little shit always called him by just his name and now he wanted to pay respects?
“It‘s fine, Sasuke.“
Kakashi tugged the shorts down his thighs and Sasuke‘s dick sprang free, dripping precum onto his abdomen like a leaky tap.
His skin was glowing a pale silver under the moonlight, smooth chest rising and falling fast, sweat pearls rolling over his stomach like glitter.
Kakashi grabbed Sasuke‘s legs in the back of his knees to scoot between them and settle his legs around his hips.
“This is purely medical, yeah?“
Even in this state, Sasuke‘s brows drew together but it was evident that the fever made him just a little bit slow in mind and body. His cheeks grew pink as the situation settled in - how his body was splayed out on the futon for his teacher. Even his chest seemed to blush.
Kakashi reached in his back pocket, producing a vial of oil.
Sasuke barely followed the motions with tired eyes.
“Pervert.“
Kakashi unstopped the little bottle, placing one hand on top of Sasuke‘s thigh which gave a little jump under his touch.
“Wrong. I keep mineral oils for my blades. Someone in this team needs to know what they are doing.“
His tone was friendly and light. He knew that pissed Sasuke off the most.
He didn‘t care for the little kick Sasuke attempted to aim at his side. The hand on top of his thigh traveled down and Sasuke‘s muscles went rigid in anticipation and finally, in horror when his teacher bypassed his aching dick.
“Hey, what-? Ahh!“
Sasuke jerked on the futon when Kakashi‘s thumb spread his cheeks apart.
“This is strong aphrodisiac. We‘ll have to stimulate the prostate too.“
Two fingers stroked over Sasuke‘s hole and he whined as Kakashi held them there to drizzle oil on top. The tight ring of muscle went impossibly tighter at the near promise of penetration.
“The prost- ahh! Don‘t fuck with me!“
“Unfortunately I have to.“
Sasuke twisted on his back as Kakashi massaged the oil against his rim. He tried so hard to tense up but the muscle was giving into the stimulation against his will.
“I-Impossible…“
Kakashi abandoned the vial on the floor, shoving his thumb into Sasuke‘s mouth.
“Bite if you have to.“
Sasuke made a noise of confusion and protest, tried to turn away his head until Kakashi pushed a slick finger in his ass.
Sasuke yelped, biting down hard. Kakashi winced behind his mask but kept pushing in in in in. Sasuke was burning up inside, clenching and unclenching around his finger as if he was at war about the intrusion.
“Sasuke?“ Kakashi tore his eyes away from his hand between Sasuke‘s legs to search for his eyes.
They were glassy, teary even. Wet tracks ran from the corners of his eyes into his hairline as he stared back at Kakashi. Even after the initial shock was over Sasuke held his thumb between his teeth anyway.
He moved his finger, slowly, to test the waters. Sasuke‘s face screwed up as he craned his head back.
“Does it hurt?“
Kakashi drew his hand back, scraping his knuckle against Sasuke‘s teeth. The boy made a little noise but not one of pain.
At least it was working.
Kakashi braced his free hand on Sasuke‘s chest before breaching his ass with a second finger that earned him a breathy moan. He was determined now, pushing in to the hilt and stroking the pads of his fingers against Sasuke‘s walls.
Even as Sasuke tossed his head on the pillow and shut his eyes tight against the onslaughter of pleasure, Kakashi didn‘t take his eyes off Sasuke‘s face. Silently and stubbornly gauging all his reactions until Sasuke‘s hips arched into his hand and his eyes flew open. His jaw went slack as he cried out, head whipping down to see what Kakashi was doing.
Kakashi pressed into his prostate and shushed him.
“You‘re doing good. Just let go.“
Sasuke grabbed tight onto the hand that held his chest down, dull fingernails biting into Kakashi‘s skin as real tears spilt down his cheeks.
Kakashi pressed his hand deeper and curled his fingers harder until Sasuke shot all over his chest and Kakashi‘s hand.
Just to make sure, Kakashi stroked his insides one more time and Sasuke flinched with a sound that sounded too high to ever come out of Sasuke‘s mouth.
“Ok…“ Kakashi pulled his fingers free slowly. Sasuke went limp already, tears still steadily leaking from his eyes. “You‘re ok now.“
Kakashi maneuvered Sasuke‘s legs so he could back away. He didn‘t even notice when he got hard.
He got hard for his own student.
He was so thankful for his baggy pants right about now.
Kakashi slipped away from Sasuke for a moment to get fresh water and wash his hands off.
He couldn‘t have been gone for more than a few minutes but when he came back, Sasuke already called out for him.
“Sensei…“
Kakashi set down the bowl of water with a clean washcloth inside.
“Yes?“
He turned to Sasuke and was very glad that he already set the bowl down.
“You gotta be kidding me.“
Sasuke was hard again.