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“A ryokan stay?”
The dismay in Izuku’s voice was swept away into the ambient chatter of the soba restaurant. He fought a frown as he looked at Todoroki’s phone, confirmation for the ryokan pulled up on the screen. 21 people booked for the 14th to 16th of July.
Izuku picked up some shrimp tempura and shoved it into his mouth to hide the insurmountable twisting of his expression.
Todoroki slurped at his noodles, watching Izuku closely. “You’re not excited,” he said, not as a question but more as an observation.
Izuku took his time chewing to consider his words. When he swallowed down the tempura, the corners of his mouth no longer tried to pull down into a frown. “Well, I just don’t know how necessary a weekend getaway would be for my birthday. It’s too much. I’m fine with a small dinner, like this.” He gestured with his chopsticks between him, Todoroki, and…
A scarred arm pushed past his outstretched arm, forcing it back to his plate.
“Kacchan, don’t shove me,” Izuku complained while Kacchan leaned against Izuku to grab Todoroki’s phone and look over the reservation.
His cheeks were full of appetizers, and through the food in his mouth, he said, “Sounds like a good time. Let’s fucking go.”
Something similar to betrayal filled Izuku because he figured Kacchan would be the last person to agree to spend time in onsens with twenty other people. He grabbed at some soba noodles and dipped them with a heavy hand. Sauce dribbled down his chin when he
Kacchan swallowed his food, still leaned against Izuku. He poked Izuku’s cheek with the top end of a chopstick. “Why do you look so pissed about this trip? You never take any time off. You’re at UA six days a week, and then in your limited free time, you’re being the number four hero. You deserve a couple days for your birthday.”
“Maybe you’re just saying that to steal the number four spot from me when I’m distracted and relaxing.” Despite himself, Izuku cracked a smile and shrugged Kacchan away from him. Finally he sighed, resigned. “But when you put it like that, I can’t remember the last time I was able to relax. So I guess it is a good idea.”
Kacchan handed the phone back to Todoroki, looking smug. “Told you I could convince him.”
“Convince me?”
Todoroki tucked his phone away. “I’ll have to let the rest of our former classmates know. Even though I won the reservation for one room from a silent auction at the childhood quirk counseling charity gala, the ryokan let me book out the rest of the rooms. Something about business being slower in the summer. And with the lack of villains, our class was able to take the weekend off. Everybody will be there.”
“Oh, I didn’t realize everybody was coming.” He had hoped that he misread 21 people.
“The only problem is that there will be twenty-one people, but the hotel only has twenty rooms. So somebody will need to share. The rooms are spacious. They can lay out four futons comfortably, but I don’t know if people want more privacy.” He paused, thinking. “I wonder if I can ask the girls if any of them want to share a room. Yaomomo and Jirou are pretty close. They’re roommates in a studio apartment, so they make it work somehow.”
Kacchan choked on his soba, and Izuku pounded on his back.
“Are you okay, Kacchan?”
Kacchan cleared his throat and drank some water, waving Izuku off. “Those two are roommates all right.” His tone implied that he was in on an inside joke. “But it’s fine. You don’t need to ask them. Izuku and I will share a room. Problem solved.”
Izuku put his chopsticks down in shock. “But, Kacchan, wouldn’t you rather have your own room?” he objected. “You like having your own space. You wouldn’t want me in your space.”
“What?” Kacchan furrowed his brows, his focus entirely on Izuku in a way that made him squirm. “No, it’s fine. ’Sides, it’ll be like when we were kids staying over at each other’s places.”
A surprised laugh bubbled out of Izuku’s throat. “Oh no, is Kacchan going to wet the bed again and blame me?”
Kacchan’s brows dropped into a glare, but even with gritted teeth, a grin teased his lips. “Die. I’ll kill you, shitty Izuku! Mention that again, and you’re not making it to 26.”
A throat cleared. The playful bubble between the two of them dissipated, and Izuku almost forgot that Todoroki could hear their banter. His cheeks heated at Todoroki’s small smirk, one that seemed to know too much.
“If you’re okay with it, then I’ll put your names down for the shared room.”
Kacchan pulled out his phone. Izuku could see the restaurant they were eating at pulled up on the screen and smiled to himself while Kacchan started typing out an in depth review. “Of fucking course, it’s okay,” he grumbled, effectively ending conversation.
Kacchan had insisted on driving Izuku up to the mountains–he had been ready to take the Shinkansen and a couple buses–and the two and a half hour drive was pleasant, even if Kacchan looked a little bleary eyed and grouchy from waking up a little too early. They listened to a podcast about All Might and called out inaccuracies, giving themselves points when they got it first. Only a couple people from their former class had arrived by the time they parked, gathered in the restaurant.
Kaminari stood when they walked in. “Hey, Midoriya, Kacchan!” he called. “Nice of you to join us when Kacchan wouldn’t let me ride up with you guys in his fancy car. He told me to take the bus.”
“Yeah because I didn’t want to listen to your fucking yapping the entire drive,” Kacchan grumbled.
Izuku grinned. “Hey, Kaminari. I hope the bus wasn’t too bad.”
“It wasn’t as nice as a luxury car, but we managed to run into the others here waiting for the shuttle.” He jerked his thumb to the rest of the people in the restaurant–Kirishima, Ashido, Sero, Mineta, Koda, and Shouji. “Hey, by the way, happy early birthday, man. We’ll make this the kind of weekend you’ve always envisioned–hot springs, endless drinks, good friends, and girls.”
Mineta whooped in agreement.
An awkward laugh bubbled out of Izuku’s throat. He wasn’t much of a drinker, especially with the necessity to stay sober for hero work, and he wasn’t all that much into girls either. “Oh yeah, it should be a fun weekend. Thanks for taking the time off to come hang out.”
Kirishima stepped up to Kaminari’s side. “Feel free to do whatever you want, dude. And if that means spending alone time with Bakugou doing who knows what, all power to you.”
Palpable rage radiated from Kacchan. “What the fuck did you just say?” he yelled.
Izuku smiled while Kacchan argued with their friends, happy that he had convinced him that the weekend would be fun.
The room was not as large as Izuku had expected–only a living room area occupied with a table–but the large window looked out over the river. Izuku pulled open the glass to look out, and the sound of rushing water and the smell of damp rocks and a faint hint of sulphur from the onsens filled the small space. Izuku wrinkled his nose at the rotten eggs smell, but he kept the window open.
Behind him, Kacchan threw down his duffle bag with a soft thud against the tatami mats. Izuku startled at the sound, his entire body aware of how close he would sleep next to Kacchan later tonight.
“I can’t fucking wait to soak in the onsen,” Kacchan groaned.
“Me too.” Izuku felt stiff.
“Why do you look stressed?”
“Huh?” Izuku looked over his shoulder, shocked at how well Kacchan could read him. “I’m not stressed.”
Kacchan put a hand on his hip, flicking his eyes up and down as if to examine Izuku mockingly. “You look like you want to shit a brick right now. Was it what shitty Dunce Face said? You don’t need to drink for your birthday.”
Izuku waved his hand at that. “No, no. I’m not bothered by that. I’ve gotten used to it by now.”
Kacchan rolled his eyes. “Yeah well you’re not allowed to be stressed during this trip. I will personally make sure of that.”
Izuku wasn’t sure, but the words sounded almost threatening.
“Do you need help with your back?”
Izuku startled at the question and looked behind him. Kacchan stood naked–a sight Izuku was not unfamiliar with–with his towel slung over his shoulder. Izuku tried to stop his eyes from dancing across Kacchan’s skin, taking in the smooth skin stretched over hard muscles, with scars painting the planes with artistic intent. His gaze even dared to look lower at the soft but weighty cock that hung between his legs. The hair was a darker, coarser blond than what was on his head, and it framed a mouthwatering sight.
When Izuku remembered that he was staring at Kacchan’s dick, he immediately jerked his eyes back to his face, meeting red eyes that were narrowed in suspicion. Izuku could feel heat burn at his cheeks and down his chest, and a different heat pumped at his balls. He pushed his legs together.
“Sorry, what?” His brain had short circuited, and he couldn’t even remember what Kacchan had asked before Izuku checked him out.
“Your back. Do you need help washing that?”
“Oh yeah sure. Gotta get squeaky clean before getting into the onsen.”
Kacchan crossed the room for another stool. Izuku watched him closely, staring intently at his soft, bubbly ass while he walked away and bent over at the waist. His cheeks split at the motion, revealing his hole. The heat was stronger in Izuku’s balls, and he could feel his own dick throb with new blood flow, growing harder. He bit his lip to stop a groan from slipping out.
Izuku didn’t even dare to look away when Kacchan turned around, approaching him at a slow pace. Instead he focused on how Kacchan’s abdominal muscles flexed with each step, not daring himself to look lower where he was sure the cock flopped against the top of his thighs.
Finally Kacchan set the stool down behind him and took a seat away from Izuku's eyesight. The soapy washcloth against his back was a shock to his brain, and he jolted a little.
“Relax, shitty nerd,” Kacchan murmured. “You’re tense.”
“Yeah sorry. It scared me,” Izuku laughed, the words coming out robotic and wrong. Kacchan’s fingers worked the terry cloth texture of the washcloth over his shoulders and down his back in slow, methodical motions. Up and down Izuku’s spine with firm fingers. His cock pulsed with every stroke, begging to be touched in the same manner.
Izuku bent over himself, away from Kacchan’s magical hands, unable to take anymore before he was about to burst. “Thanks, Kacchan,” he said, an awkward laugh punctuating his words. “My back is all clean now.”
Kacchan tossed the washcloth at him, and the stool creaked as he readjusted behind Izuku’s back. “Good. Now wash my back.”
Izuku peeked over his shoulder to find Kacchan turned around, his broad back facing Izuku. Spit pooled in his mouth, and his hands gravitated towards the skin unthinking. The washcloth didn’t mask the smooth feeling of his muscles. Izuku sat enraptured, watching his own hands massage lather soap. The suds danced down the contours and curves until they slipped between the crack where Kacchan’s cheeks met, disappearing from Izuku’s line of sight.
Unbidden, his hands drifted lower, scrubbing and massaging, counting each individual rib and vertebra. He followed the trail marked by the foam, creeping lower and lower. Finally, his fingers worked into the muscles of each asscheek.
A soft moan escaped Kacchan. The sound went straight to Izuku’s cock.
He removed his hands immediately, his body burning. “Y-your back’s all washed.” His voice squeaked and stuttered. “I need to rinse off, and then we should check out the onsens.” He turned on the water, keeping it cold, splashing his face and dick with it. He tried not to notice Kacchan sitting down at the faucet next to him to rinse off as well.
The cold water did nothing for the lust raging through Izuku’s veins, and the little towel wrapped around Izuku’s waist could barely conceal his balls as his boner tented the material. He tried to bend the hard on, tried to stop the blood flow, and it only minimally worked. Finally, Izuku tucked the tip against the top of the towel, pinning it against his stomach. Hopefully in the walk between the baths to the onsens his need would dissipate. His stomach flipped uneasily at the thought of removing his towel around his friends and revealing his extreme boner.
“Hey, Izuku, are you fucking coming?” Kacchan turned around at the exit to the baths, glaring and crossing his arms.
“Sorry, Kacchan. Coming!” He hurried after Kacchan.
He really wished he could cum at the moment. His balls would hurt less.
The July afternoon was hot and humid, with damp air immediately sticking to Izuku’s freshly washed skin. The smell of sulphur was stronger as they neared the onsens, reminiscent of rotten eggs, and Izuku gagged a little at the smell while he adjusted to it. He was grateful that the unpleasant smell seemed to be the cure to his perpetual hard on.
Cheerful voices filled the air, getting louder as they approached the spa area. There were multiple spas, and their former classmates were spread between them. Izuku followed Kacchan, surprised that he was headed towards one of the more full pools.
Kacchan, unabashedly, removed his towel, tossing it towards the rocks at the edge of the pool, and stepped into the water. Izuku’s eyes found his ass immediately, locking on like a homing system, watching it flex and jiggle a little until it disappeared under the water.
The boner had returned with a vengeance.
Izuku moved with the quickness of being a former One For All user and followed Kacchan into the water before anybody could see his pulsing cock standing at attention. He scalded his skin by moving too quickly into the hot water, but it was a sacrifice he was willing to make. If his cock burned off, it was the punishment he deserved. A hell of his own creation.
Sweat started to form at his hairline from the combined heat of the air and water temperatures, and his balls felt like they were being cooked alive. He was met with a chorus of greetings when he waded over to Kacchan.
He sat on the bench along the wall, closing his eyes and relaxing as the heat finally loosened some remaining tenseness in his back. His eyes cracked open when the water splashed next to him. Kacchan took a seat next to him, sitting close enough that their thighs touched.
Uraraka, Tsu, Todoroki, and Iida filled the air with light, animated chatter. Izuku could barely pay attention, realizing how much he needed this. Kacchan chimed in a couple times, but every time he talked, he seemed to move even closer. What was a graze of their thighs became squished together from hip to knee.
Then Kacchan moved fully onto Izuku’s lap, ass right against his dick.
Izuku’s mind had melted from the heat, he was sure. His brain matter had to have been dripping from his ears and melding with his sweat. The cold bath was calling his name, both to solidify his gooey brain and to quell his raging boner.
Kacchan readjusted on his lap, wriggling against Izuku’s rigid cock that he had to have felt, and something tugged at Izuku’s lower back and deep in his balls.
He was about to cum. In the onsen. In the same onsen that their friends were also in.
His hands found Kacchan’s hips. Desperately, he wanted to guide Kacchan into the perfect position to rut against his ass, but instead he forced Kacchan off his lap. Then he took off, swimming through the scalding, rotten eggs water to leave as quickly as possible. He barely had the thought to grab his towel again as he hurried off to the baths again.
He found a stall, and the second the door was locked, his cock was in his hand. His other hand supported him against the wall of the stall while he stroked and squeezed, tracing the thick vein on the underside to hurry his orgasm. He could hear a couple showers running, meaning there were people in the room while Izuku jerked off.
But he couldn’t get Kacchan’s perfect ass out of his head, and his climax quickly followed, spilling cum over his fingertips and palm.
“Fuck,” Izuku whispered. He had cum so much that he almost couldn’t cup it in his hand, so desperate for release. He wiped his hand with toilet paper and flushed away the evidence of his shameful boner.
Mortification had set in with the clarity after cumming. He went back to his room to hide, not even coming out for dinner.
The quiet was suffocating while they watched two staff members turn down the room, lowering the shoji screens, moving the table to the side, and laying out two futons. Relief coursed through Izuku when he saw the sizable distance they had placed between the two futons, calming nervous butterflies that had been incessantly beating their wings against his stomach. He had been scared to sleep so close to Kacchan after leaving the onsen so abruptly and avoiding him during dinner.
Izuku bowed his head, thanking the two men as they left, but then he was alone with Kacchan. He opened his mouth to say something, but anything he wanted to say got stuck in his throat, trying to choke him.
Kacchan stomped over to a futon, grabbed the corner with his toes, and kicked it closer to the other one until they almost overlapped.
“Hey, Kacchan?” Izuku finally forced out. “What are you doing?”
“Can I not move my futon?” Kacchan snapped.
“But why next to mine?”
“The room’s small.”
“It’s not that small if they could put so much space between the two futons.”
Kacchan scoffed. “Fine. I didn’t like how they laid it out. I need to fix it.”
“Is that a good idea?”
“The fuck do you mean good idea?”
“Like maybe we don’t need to sleep so close?”
Kacchan stopped fussing over the bedding to stare at Izuku, expression unreadable. He seemed to find something in Izuku because he sighed, tipping his head down in defeat. He walked over to the screen shade for the balcony, disappearing outside. Izuku frowned after him, confused at what he could’ve seen.
With a sigh, he tugged Kacchan’s futon back into the right position and laid down in the other. Sleep was difficult, as he was too wired from his earlier humiliation, but soon, he started to drift off. The last thing he remembered before sleep took him was the screen door closing and warmth covering his side.
Izuku woke with the mid-July sun–early. The shoji screens over the windows filtered the direct light, but the sunlight still roused Izuku. He felt warm and found that he couldn’t move his right arm. Turning sleep-crusted eyes down, his eyes gravitated towards the blond head nuzzled against Izuku’s chest. Something in his chest melted, seeping through his ribs and lighting his veins on fire.
Kacchan, at some point, had pulled his futon next to Izuku’s and curled into him during sleep. Izuku didn’t want to move, but also the heat in his veins, moving towards his cock, ignited him to sit up. When Kacchan moaned in protest, he wove his fingers through the soft, blond tufts of hair and scratched against his scalp, soothing him until his breaths evened out.
Izuku slowly peeled himself away, coxing Kacchan back to sleep with every movement. Finally, he slipped away, wincing at how painful his boner throbbed against his boxers. He hissed and bent at the hard member to will it down before he could even go to the baths. It seemed early enough that nobody would be in there, but also Iida was nothing but punctual.
When the warmth dissipated enough, he grabbed his toiletries and hurried off to the baths. It was thankfully empty. Izuku’s phone had told him it was before even six in the morning, but he was too wired to try to continue to sleep next to Kacchan.
The restaurant was as abandoned as the baths. Izuku grabbed a Yakult from the self-serve fridge before helping himself to the breakfast buffet laid out.
With his plate piled high, he sat at a table at random and ate mindlessly while scrolling on his phone.
Murmurs interrupted his thoughts. He glanced up to see Yaoyorozu and Jirou walk into the restaurant together, with their hands clasped and dressed in the ryokan kimonos. His eyebrows immediately furrowed, and his head tried to fill in every gap on what he knew about their relationship.
He knew they lived together. He’s been to their apartment a couple times for hang outs with friends. A studio. He remembered Kacchan scoffing when Todoroki called them roommates though. Roommates all right, he had said after choking on his soba.
Izuku tried not to stare the two women down, but he also tried to analyze their positioning. Hands linked together, with fingers interlaced. Arms pressed together, as if to minimize the space between them as much as possible. Jirou even had an earphone wrapped around Yaoyorozu’s bicep while she tipped her head against her shoulder.
There was intimacy there.
Izuku didn’t mean to feel surprised, but the shock jolted through him involuntarily. Maybe it was the closeness between his two former classmates. Maybe it was the closeness between the same sex couple. Maybe it was because Kaminari talked so highly of Jirou, he had been rooting them on.
“Oh, Midoriya!” Yaoyorozu gasped upon seeing him–he had been muttering at this discovery–and the two women jerked their hands apart.
“It’s a little early, huh,” Jirou murmured embarrassed, scratching the back of her head with her newly freed hand.
He plastered on his signature, All Might-inspired grin. “I usually go for a run this early, so it must’ve been the routine waking me up.”
They both relaxed a bit.
“We’re going to grab some food, and we’ll join you in a second, Midoriya,” Jirou said.
“Did you need anything else?” Yaoyorozu asked, nodding towards the buffet.
Izuku shook his head and watched them move towards the buffet. Their hands found each other again, as if two magnets bound to attract each other. He frowned down at his food, unsure why he felt jealousy at the closeness between the two of his former classmates.
He remembered a naked Kacchan scrubbing his back, perching on his lap, and even sleeping on him. Kacchan, Kacchan, Kacchan. So many images filled his head. How Kacchan convinced Izuku to come. How Kacchan picked Izuku up to drive to the ryokan, while telling others to take the bus. How Kacchan wanted to share a room.
He wanted that with Kacchan.
Izuku jumped up from the table, cleaning up his plate. “Enjoy your breakfast, Yaoyorozu, Jirou!” he called before hurrying out of the restaurant to his room.
Kacchan was still asleep when Izuku returned, sprawled across the two futons that hadn’t been that close when Izuku had fallen asleep. Izuku kneeled down next to his head. His fingers twined into the blond strands again, scratching lightly at Kacchan’s scalp and tugging slightly at the root of the hair.
Kacchan woke with a groan, bleary eyed and blinking at the light. “Izuku?” he asked, his voice still thick and soft with sleep.
Izuku’s heart squeezed, and his stomach flipped. “Morning, Kacchan.”
“Mmmm, happy birthday.” The soft murmur was almost indecipherable if Izuku didn’t speak before Kacchan.
“Oh yeah, that’s today.”
“Was I the first to tell you?”
Izuku smiled at how gentle Kacchan sounded. “Yeah you were. Did you want to go back to the onsens?”
Kacchan stretched, letting himself wake up more. “Sure.”
The onsens were quiet and empty so early in the morning, giving them more privacy. They washed each other’s backs again, and Izuku once again felt heat burn through his body while watching the suds drip into Kacchan’s crack.
When they were seated on the bench in the pool, Izuku turned to look at Kacchan. Kacchan was already looking at him, which startled Izuku. He averted his eyes, but they drifted back, attracted to only Kacchan.
“Can I kiss you?” Kacchan asked.
The question was abrupt, which was not usually Kacchan’s style.
“It is your birthday after all, so feel free to say no.”
Izuku’s response was to lean forward and gently press their lips together. Kacchan moaned in approval and moved his mouth, applying more friction and pressure, turning a peck into a true kiss. Their mouths danced against each other, learning each other’s rhythm. Izuku sucked on Kacchan’s lower lip before he delved his tongue in and tasted the inside of Kacchan’s mouth. He tasted like toothpaste mostly, but Izuku still craved more.
Kacchan moved and slung his leg over Izuku’s lap, straddling Izuku. The new position allowed him to cup Izuku’s face and take more and more. Izuku pulled back a little to gasp when Kacchan ground himself against Izuku’s cock.
“Wait Kacchan,” he pleaded, his breath coming out as pants. “Hold on. It’s not a good idea to do that here.”
Kacchan chased Izuku with more kisses. “Why not?” he asked defiantly against his lips, grinding harder.
“It’s an onsen,” Izuku protested weakly. “It would be unhygienic to do that in here.”
“Do what? Fuck?” He switched up his grinding rhythm to emphasize his words.
Izuku groaned. “How would we even do that? Water isn’t a good lubricant.”
Kacchan grabbed one of Izuku’s hands and brought it to his ass, guiding fingers to his hole. Izuku gasped at the slick feeling and stuck a finger, shocked at how easy his finger slipped inside.
“Kacchan, did you prep yourself?” he asked, bewildered.
Kacchan nodded, fucking against Izuku’s finger. “Yeah. I’ve been trying to seduce you, but it hasn’t been working.”
“Seduce me?” Izuku slipped two fingers into Kacchan’s hole.
“Washing each other’s backs and sitting on your lap in front of your friends and then we would sleep with our futons together. But you got all weird.”
Izuku stole his lips again with a deep kiss and worked a third finger into Kacchan’s prepped hole. “I was weird because I had a boner that wouldn’t go away. It could’ve been a medical emergency.”
Kacchan snorted. “Well you should probably fuck me then.”
“Not here,” Izuku protested.
“Izuku, I have seen like forty goddamn pubes floating in the water in the past ten minutes, so you shouldn’t care about cleanliness. So stick your dick in me right now.”
Izuku groaned but obliged. He pulled his fingers out, positioned Kacchan over his cock, and forced him down. The noise Kacchan made was guttural, echoing on the stones around them, reminding Izuku that they were in a public place. Izuku let Kacchan adjust while he also adjusted. His body smouldered in the heat of the onsen, but somehow the grip of Kacchan’s ass around Izuku’s cock was even hotter.
Kacchan started to bounce, raising himself up and then sliding back down, picking up pace. They hissed together at the feeling. Izuku rutted up too, matching Kacchan’s rhythm and meeting in the middle with a muffled slap of balls under the water.
Soon the tugging was back in Izuku’s balls, as he felt himself getting closer to the edge. His hand found Kacchan’s neglected cock, stroking the length of it, hoping to bring him to climax first.
Katsuki tipped his head back, moaning with his mouth wide open. “I’m so close,” he whined.
Izuku tugged at his tip, rubbing his thumb over the slit there. “Me too,” he whispered, feeling seconds away from tumbling down. When he felt Kacchan clench tighter around him, he kissed him, stroking him through his orgasm. He watched as Kacchan shot ropes of cum that mixed with the water, floating away. The next people in the onsen would unknowingly soak in Kacchan’s cum. His own orgasm followed, and he punctuated it by thrusting his cock deep inside Kacchan.
They panted in silence.
“I think I’m in love with you,” Izuku said.
“What?” Kacchan didn’t sound irritated. Instead, he sounded hopeful.
“I think I really love Kacchan.” It felt so simple to admit.
Kacchan pulled him in for a kiss. “Happy birthday, Izuku,” he said, which sounded like Kacchan speak for I love you too.
They spent the rest of the day in their room, with their futons pushed together, fucking and making love. Nobody even dared to ask where Izuku was for the rest of his birthday.