Lessons

Summary: Kakashi, Naruto and Sasuke take a mission together when Sakura gets sick and they discover something surprising that changes their relationship. Warnings: Slash, M/M/M, PWP, etc.

Of course this would happen to him. He—Kakashi Hatake, jonin—would have taken a mission that would have led to this. Of course he wouldn't have seen Sakura getting sick right before the mission as an omen—if he even believed in those. Of course it wasn't a good idea to go on a mission with just him, Sasuke Uchiha and Naruto Uzumaki. Kakashi was basically asking for this to happen.

The mission was supposed to be simple: deliver a scroll to the personal container of a nobleman. After the disastrous (or somehow inspiring) mission that involved the Land of Waves, Kakashi figured that this mission would literally be a piece of cake. Easy money, easy mission, easy everything.

What he had not expected was walking into the building with his two students and stumbling upon the nobleman and another man fucking each other. That was not part of the mission description anywhere. Now, Kakashi was not homophobic by any measure. He had his own fair share of experiences with both men and women and he liked to consider himself quite liberal in that regard. What he was more worried about was Sasuke and Naruto. Specifically: the questions they would have.

As they finished their mission and checked into a hotel for the night (cheaper without Sakura having to get her own room, which was a small positive in the giant sea of negative), Kakashi grumbled. Naruto had been uncharacteristically silent which only meant that he was suppressing every single little thought he was having. At some point, it would explode and Kakashi would have to clean up the mess. Sasuke—who probably could win major money with his poker face if he so tried—even looked like he was in deeper thought than usual. This was particularly odd as Sasuke was usually thinking about revenge and other "normal" things that teenagers thought about. Sure, they were ninjas with the license to kill. But that didn't mean they had to constantly think about killing their brother. Although Kakashi definitely understood the urge.

As the trio checked into their hotel room, Kakashi inwardly groaned. He hadn't paid a moment's attention to the nice hotel clerk who incidentally gave them a single room—with a single bed. Kakashi had been looking forward to a nice restful night in a comfortable bed. Although, he supposed that he could convince Sasuke and Naruto to sleep on the floor…

"Sensei?" Naruto's voice cracked through the silent ambiance. Kakashi straightened his back and sharply inhaled. This was it: the deluge of questions.

"Can we get ramen before we leave tomorrow?" Naruto asked. Kakashi let out a sigh of relief. He was definitely not expecting that, but he supposed it was better than—

"What were those two men doing?" Sasuke's tepid voice seemed to hide the rising curiosity that his onyx eyes clearly held. Kakashi closed his eyes, adjusted his mask a bit and ran a hand through his silver locks before letting out a groan.

"Look, I'm sure Iruka-sensei would be much better at answering these questions—"

"They were having sex, weren't they?" Naruto's loud voice pushed through the air. Kakashi dropped his heads into his hands. He was not about to have this talk.

"Two men can't have sex, dobe." Sasuke sneered. Kakashi cleared his throat and Sasuke almost looked offended, as if Kakashi had called him dobe.

"Sasuke, they can. Naruto, yes they were. Look, I'm not a medic-nin or anything. I don't think I could answer any of these—" Kakashi bit his lip. He realized who he was speaking to: the boy whose parents sacrificed their lives to seal a demon fox and the boy whose entire family was murdered by his brother. Understandably, they probably never had a "talk."

"How do two guys even do it? They don't have a…y'know." Naruto's tan skin blushed slightly. Kakashi, for some reason, was suddenly enthralled with the innocence that the normally loud-mouthed blonde was emanating. Sasuke was unusually quiet as well, even though he was clearly watching Kakashi for an answer.

"Is there a jutsu that makes one? Do they do some type of sexy-jutsu?" Naruto's questions seemed so off-base and yet the way he cocked his head and sat attentively at Kakashi's feet threw Kakashi off. He sat on the edge of the bed where Sasuke and Naruto had chosen to kneel. In his sweatpants, Kakashi was noticing an unwelcome presence. He admittedly hadn't had time to really take care of himself lately and just thinking about sex—even around two of his students—was starting to arouse him.

Unless…

Kakashi closed his eyes for a moment. How could he consider letting himself get off with the help of two his students—one of whom was related to his best friend and one of whom was the son of his former teacher? Yet, despite the conflict between the upper half and the lower half of Kakashi's body, Kakashi tried to rationalize it. He would be helping them. A ninja must always be prepared and who knows if their downfall one day would be stumbling upon two horny men and being so stunned that they lose focus of their mission? Kakashi reasoned that he was doing them a favor. Having an idea, Kakashi reached over the boys to grab his knapsack. He started to dig through it until he found what he was looking for.

Pulling out his Make-Out Paradise book, Kakashi cleared his throat.

"I'm going to explain everything to you guys tonight. But there's two rules. One, this stays between us. Sakura, The Hokage, even Iruka—no one can know about this. Two, you have to listen to everything I say. Deal?" Kakashi arched an eyebrow as Sasuke and Naruto seemed to ponder the rules for a moment. Not long after, they both nodded quietly. Naruto looked at the orange book again and raised his hand.

"Sensei, why do you have that book then? Does it talk about how two men do each other?"

"Uh, no. It's for you guys. I'll explain in a bit, okay?" Kakashi promised. Clearing his throat, Kakashi started to read from the book aloud. He adjusted his sweatpants a bit, hoping to hide his growing erection.

"She was slowly removing her shirt. Underneath was a red bra that was just barely able to contain her big breasts. She squeezed them tightly together as her shirt fell to the floor—"

"What is this? Porn?" Naruto asked, scrunching up his face a bit. Kakashi quietly chuckled and continued to read from his book.

"…she collapsed on a bed and slid her jeans down her long legs. She then started to rub her pussy through her red panties. I couldn't believe this was finally happening. I felt my cock stiffening in my pants as her bra came off and her large breasts spilled out, bouncing a bit as they did." Kakashi finished reading the paragraph and looked up from the edge of the book to see if his arrow had hit the mark. Smiling, he knew they did.

Sasuke was sitting cross-legged on the ground. He had managed to grab a pillow that was conveniently located above his groin tucked away in his white shorts. Naruto looked uncomfortable and was lying on his chest, clearly trying to hide something that was stretching in his sweatpants.

"Did you boys hear the part about the narrator's cock stiffening?" Kakashi asked innocently, as if not knowing exactly what was happening to the boys. In fact, he placed the book right above his pulsating bulge. Naruto weakly nodded while Sasuke remained stoic.

"W-What does this have to do with two guys?" Naruto asked.

"Well, I think better than telling you about it, I could show you." Kakashi smiled a bit from underneath his mask as he put aside his book and stood up. In front of the boys was a clothed bulge. Taking a deep breath, Kakashi dropped his sweatpants and stepped out in silver briefs, tightly outlining his round ass and large bulge. Naruto and Sasuke shot their teacher weird looks, although they looked even more stained.

"As you know, men have penises and asses." Kakashi pulled of his shirt as well, revealing his chiseled and scarred torso. Running a hand down his chest, Kakashi shivered as his nipples became erect and his bulge grew. Naruto squeaked as he leaned forward on his chest, clearly hiding his bulge.

"So men use their cock," Kakashi squeezed the outline of his bulge from his underwear, "and place it in the asshole of the other man. Then they fuck. It's as simple as that."

"D-Does…it feel good? It sounds like it would hurt." Naruto quietly asked.

"Well, if you would be willing, we can try it. But only if you both want to do so." Kakashi looked at the two boys who shared a look with each other. Even though both were slightly uncomfortable, they both nodded as if agreeing to a silent competition.

"Good. Help each other undress, okay?" Kakashi sat back down on the bed and started pumping his cock through his briefs as he watched Sasuke pin Naruto down. Unzipping Naruto's jacket, Sasuke exposed Naruto's tan chest. Kakashi was impressed with the clearly developing abs on Naruto's body. Raising his hands, Naruto let Sasuke throw off the jacket. Kakashi felt a surge of arousal when he noticed Sasuke grinding his arousal into Naruto's arousal. The two locked eyes as Naruto's hands crept up Sasuke's chest.

"Impressed, dobe?" Sasuke smirked, throwing off his blue shirt and revealing a set of chiseled abs. Kakashi was impressed as well, and his arousal only grew more. The two shirtless boys were panting as they continued to grind their erections against each other. Finally, Sasuke's finger started at Naruto's neck and slowly traced down his bare chest until he reached Naruto's navel. Circling his finger around it while maintaining eye contact, Sasuke hooked his fingers underneath Naruto's sweatpants and started to pull them off. Naruto lifted his butt from the ground and let Sasuke pull down his pants. Naruto then lifted his chest from the ground and unbuttoned and unzipped Sasuke's shorts. The two boys then moved off each other and stood in their boxer shorts, clearly aroused. Sasuke was in black plaid boxers while Naruto had boxers with frogs all over them.

"Look, this might sound silly, but sometimes it helps to give each other some help. Kiss and see how that feels. I mean, you both have kissed once already from what I've heard…" Kakashi lazily drawled out his words as Naruto took a step forward and grabbed the back of Sasuke's head and crashed his lips against his owns. Their tongues wrestled for dominance as their moved closer to each other, loving the feeling of their bare chests rubbing against each other as they stood in their underwear.

"Now, Naruto, come over here." Kakashi didn't feel like breaking up the hot kiss but he figured he needed to keep the lesson moving. As Naruto walked over, Kakashi grabbed the smaller boy's hand and placed it on his erection.

"Sensei…it's so big!" Naruto's lips grew wide. Kakashi was groaning, already imagining his cock in between those luscious lips. "Sasuke, come and look!" Sasuke did not hesitate to come over and pump Kakashi's cock through his briefs.

"Why is it so big?" Naruto's blue eyes stared at Kakashi. Feeling his cock twitch at the attention, Kakashi blushed. As he hardened even more, Sasuke let out an inaudible gasp. Naruto noticed and gasped, too. "It's getting even bigger though!"

"Pull it out, Sasuke." Kakashi slowly ordered the raven-haired boy who complied. He pulled down Kakashi's briefs and out sprang the hardened member. Kakashi's breath caught in his chest as he watched his two students stare at his cock in awe. He considered where he was again and wondered if it would be right. When Naruto reached down to cup his balls, Kakashi's logic went out the window and he grinned.

"I'm sure both of yours are going to get big, too. I've heard Uchiha's have naturally large ones and Naruto, I'm sure you'll have a big dick, too." Kakashi blushed, remembering the first time he saw Minato in all his glory. "But here's the fun part. Like those two men we saw today, we can use our dicks to have fun." Naruto cocked his head.

"I'm going to need Naruto to let me put it in his mouth." Kakashi tapped his fingers against his abs, staring at Naruto who looked unsure for a moment. Sasuke, however, seemed impatient and grabbed the back of Naruto's blonde head and shoved it down on Kakashi's cock, ignoring Naruto's gags.

"Easy, Sasuke. Let him settle down." Kakashi stroked Sasuke's bare shoulders as Naruto adjusted himself and started to wrap his pink lips around the head of Kakashi's large cock. Running his other hand through Naruto's hair, Kakashi smiled.

"Open your mouth, Naruto." Naruto smiled and nodded excitedly, sending a glower to Sasuke. Kakashi groaned as Naruto—who could only take it about a quarter down-sucked and swirled his tongue around Kakashi's cock like he was slurping up noodles. Sasuke looked uncomfortable and stepped out of his boxers. He pulled down Naruto's boxers as well—confirming Kakashi's suspicion that Sasuke was definitely a control freak—and scooted beside him.

"I can do it better." Sasuke bragged. Naruto glowered at Sasuke as he continued to lick the head of Kakashi's cock, using his hand to pump the rest of it. Sasuke pulled himself closer and started to curle his tongue around the head at the same time. Before Kakashi knew it, Sasuke and Naruto were kissing each other around the head of his cock. Kakashi groaned aloud again as he felt both of their tongues curl around him. The two boys kissed each other aggressively, as if releasing all of that pent up energy and arousal.

The thought of Naruto and Sasuke kissing and playing with each other's cocks—which were modestly sized from Kakashi saw—made heat spread through his abs. His erection started to twitch in the mouths of his two students.

"K-Keep it up, boys." Kakashi bit his lip as he reached over and pushed the two boys even closer together on his cock. Finally, Kakashi couldn't hold it in any longer and the first shot of his warm seed flew into the connected mouths of his students. Although Naruto flinched, Sasuke kept Naruto's head on the cock as they continued to make out with Kakashi's cum and sensitive, wet head in between them. As Kakashi finished pumping his cock out and making his students swallow his seed, he ran a hand through his hair and panted. Sasuke had a neat line of seed drippling down his chin while Naruto was—naturally—messier with cum spread all over his lips.

"Clean each other up for me." Kakashi watched as Sasuke and Naruto moved away from Kakashi's cock and started to lick at the cum on each other's face. Sasuke's tongue moved across Naruto's face as if he was lapping up delicious food. Naruto kissed up the streak of cum that was stuck on Sasuke's chin. Once they finished cleaning each other up, they looked back at their sensei with their arousals painfully hard.

"Now, for the next part of the lesson, I'm going to need a volunteer." Kakashi stood back up. Naruto immediately raised his hand and smiled.

"Good. Naruto, get ready for a night of fun." Kakashi smiled as he pulled out a bottle of lube from his knapsack.

Chapter 2 coming soon :)