CW: Dragon Au, Dragon Kiri, alchemist Izuku/King Katsuki, kiri/izuku/katsuki, NSFW (eventually), THERE IS PLOT, Kiri is cute and basically a dumb puppy, has no sense of space. Violence due to fighting but nothing serious. Dub con because Katsuki is a tsundere.

“Kacchan, I am not finding any more signs of Dragons. Are you sure you saw one?” Izuku asked as him and the King of the lower lands walked in the woods.

“Are you saying I was lying?!” Katsuki growled, his tattooed arms flexing as he clenched his fists at his side.

Izuku stopped and turned around, nervously playing with the strap of his satchel across his chest, “Of course not! I just mean...I could have been something else.” Izuku’s green eyes looked away as Katsuki glared at him.

“We keep looking!” Katsuki growled, flipping his cape angrily, as he continued to stomp forward.

“But it's been 2 days already!” Izuku complained following the King's fast strides.

Izuku yelped when his curly green hair got snagged on a low tree branch.

“IZUKU!” The King yelled angrily as his alchemist fell behind.

“I-I’m coming!” Izuku stammered as he struggled to get his hair unknotted from the branch.

***

Katsuki growled and came to a stop when he still hadn’t heard Izuku rush towards him. He turned around and marched back to where Izuku was, only to find nothing. His heart raced and he unsheathed his sword. “IZUKU!?”

He moved around the brush, looking for his green haired idiot. “IZUKU CALL OUT TO ME!”

Was it an ambush? Were the highlands finally attacking?! There was a sudden gust of wind making his cape flare out and his hands raise to protect his face. A large clawed hand wrapped around his arms and waist before he was lifted quickly off the ground.

His stomach dropped as he watched the forest below fall away.

“Hi Kacchan.”

Katsuki suddenly looked up and over to see Izuku in another large clawed hand.

“I found the dragon.”

***

Kirishima had been lost for a few days. He was excited when he felt the pull of his mate and immediately flew off to find them. But they kept moving in different directions. He ended up flying in circles for a full DAY before he got dizzy and decided to rest on a hilltop.

He was laying his head on his paws, defeated when he heard them.

Two humans arguing in the woods below. Finally, his pull was in the same spot! He jumped up into the air, gathering momentum, before swooping down to pick up his soon to be mate.

But when he flew back up, the tug of the bond was still on the ground AND in his hand.

He had two.

TWO MATES!

Now he was flying home to the nest with his two mates literally hand in hand. One squirming and shouting while the other tried to calm him down. He let out a loud happy roar as he approached the nesting cave, announcing his arrival to the others.

***

"When we land, we kill him!" Katsuki growled as he saw them approaching a cave.

"KACCHAN! NO! Its a DRAGON! I want to study it!" Izuku cried out. He pouted, "Plus you dropped your sword."

"I have my magic!" He growled back. But Izuku was right. They needed to study the dragon. The idea of using dragons as an ally should the lower lands attack was too good of an idea from the green haired alchemist.

"Um, we're gonna crash." Izuku stuttered out.

"WHAT?!"

"He only has two legs to land on! Them momentum with out his other arms-"

Then it happened. The dragon swooped down to land two feet touching before his body lurched forward.

His large hands opening to brace on the ground ended up throwing both Katsuki and Izuku.

Luckily it wasn't far and they landed into some water. Some very warm water.

Katsuki stood from the steaming water and shook out his hair. His cape was SOAKED. "FUCKING STUPID DRAGON!"

Izuku sat in the pool of warm water and lifted his hand in an excited woop before blushing when Katsuki glared at him.

"Get up!" Katsuki growled. "Lets hope this thing can communicate."

***

When Izuku and Katsuki walked out of the hot spring, drenched, they noticed more people and dragons. They had gathered around the Red one that had kidnapped them.

One Black looking dragon nipped at the red one as if scolding it. Making the red one whine.

"Heh! Serves the idiot right." Katsuki smirked as they came up to the group.

The red dragon perked up, its tail thumping happily on the ground.

A girl walked over to them: She was short with brown hair and very...curvy. Both Izuku and Katuski blushed and looked away noticing how sheer and loose her clothing was.

"Sorry about that! Kiri is still young and is a bit clumsy."

The black dragon came over and nudged the woman, letting out a croon.

"Oh! Right," She turned to the men, "My name is Ochako. Apparently you are Kiri's new mates."

"MATES?!" Both Izuku and Katsuki yelled. Though Izuku seemed excited while Katsuki seemed disbelieving.

"Yeah um, the dragons can sense their mates. A-anyway, we can get you new clothes!"

***

Izuku and Katsuki had changed out of their wet clothes into the loose clothing that Ochako wore, though thankfully less sheer.

Izuku sat down at a table with her in the small tent while Katsuki hung up his and Izuku's clothes to dry.

"So, the dragons have to go through a courting before they get the ability to shift?" Izuku asked.

Katsuki turned his attention to them at that.

"Yes. Kinda." Ochako blushed rubbing her neck.

"They will give you gifts. If that is accepted they, ugh, flirt with you. The last part is the...the ugh. sex."

"HAH?!"

They both jumped at Katsuki's shout. Izuku's eyes wide and cheeks red with a blush.

"I know!" Ochako said with her hands up, "I was the same way when I first heard about it!"

"So you FUCKED a DRAGON?!" Katsuki yelled a bit too loudly.

Izuku covered his face with his hands in embarassment, "KACCHAN?!"

"Yes." Ochako cleared her throat, "I did."

"Have you SEEN our dragon?! HE IS HUGE!" Izuku squeaked.

"Yeah, ugh, maybe that's why there are two of you?"

"This is bull shit!" Katsuki growled slamming his fist on the table. "I have a KINGDOM to run! I cant be going around FUCKING DRAGONS!"

There was a long silence. Katsuki looked at Ochako who had a worried face, looking past Katsuki.

Izuku was also looking behind him, hand over his mouth and his eyes looking watery. Damn cry baby.

Katsuki turned around to face the tent opening to see, the red dragon.

He was sitting down, head hung low, with shimmery puppy dog eyes. Looking as sad as a kicked pup. It made Katsuki's heart hurt.

Why, he didn't know, and he hated it.

"Kacchan..."

"FUCK OFF!" Katsuki yelled before leaving the tent, ignoring the whine of the red beast.

***

Izuku stood up and slowly walked over to the large red dragon. He whimpered at the hum and looked away.

"Hey big guy." Izuku cooed. He walked over and lifted his hand shyly to the dragon's snout.

Kiri nudged his nose against his hand with a soft croon. "There ya go. Kacchan, I mean, Katsuki, is just worried. He is always like that."

Izuku smiled as kiri turned his head, allowing Izuku to pet and scratch under his chin.

Izuku was entranced. The dragon's scales were smooth like polished stone. Red with deeper hues near his underbelly. Gold sprinkled in the shine as light danced over the scales.

"So pretty." Izuku sighed.

Kiri stood up straight as if surprised before letting out a small boof and running off.

"What did I do?!" Izuku asked as he watched the dragon fly off.

Ochako walked over with a small grin. "Nothing. He is off to find your gifts."
***

Katsuki couldn't believe this! He was expected to just be OKAY with the fact that a dragon kidnapped him and Izuku? The fact that it EXPECTED him to have sex with it?!

Katsuki kicked a rock which skipped and hit...a dragon.

"Fuck."

The dragon was a shimmering gold and turned to look behind him as if a fly had ran into his back. His head rolled back to look at Katsuki upside down before letting out a confused sound.

Katsuki's heart pounded in fear. He could handle this!

The dragon turned around and walked over too him, suddenly disappearing into a cloud of shimmering light and emerging a naked human.

"WHOA WHAT THE FUCK!?" Katsuki yelled covering his eyes.

"King Katsuki! You are Kirishima's mate?!"

Katsuki looked back and kept his eyes trained above waist level. "Do I know you?!"

He looked at the man: Blond hair, golden eyes, a cheeky smile. Then it clicked, "You came to my court asking about wives didn't you?!"

He laughed, "Yeah, I did. My name is kaminari."

Katsuki glared at the hand offered to him.

Kami put it back down. "Look, Kiri is a good pup. As his dragon kin, if you do anything to him I wont hesitate to hurt you."

Kami's eyes gave him a look that screamed power. Lightning crackling around his body.

Katsuki smirked, "Are you threatening me?!"

Before anything could happen Izuku ran over. Panting and bending over, hands on his knees, "K-kacchan, dont" he huffed catching his breath and standing up, "Don't fight with the dragons! Please!"

Katsuki looked over to the red faced and panting Izuku. His stomach curling hotly with dirty thoughts of how he looked.

"Tch, fine." He crossed his arms.

"Oh, well good for Kiri that you already like each other." Kami said teasingly.

Both Katsuki and Izuku blushed. "WHAT?!"

***

Both Izuku and Katsuki stayed a good distance away from each other after that. Izuku blushing anytime he made eye contact with Katsuki.

Damn dragon outing him like that! But, if he was right, then Izuku liked him back. But it was just admiration. Maybe the dragon was confused.

Come nightfall all of the dragons and their mates got into their nests. All scattered but close enough together to see one another.

Katsuki crossed his arms and glared at the nest. "I'm not getting in."

"Kacchan."

"NO! I am a king! I am not sleeping in a-HEY!"

Before he could say more, Kiri picked him up by his shirt with his mouth. Carrying him like a bad kitty to the nest where he plopped him down on the soft pillows and blankets.

He sat up and glared at the dragon and Izuku.

Izuku laughed until it was his turn. Letting out a surprised yipe as he was lifted by the dragon and plopped down into the nest on top of Katsuki.

Izuku giggled nervously, now sprawled over Katsuki's chest, his legs straddling his lap. "Sorry kacchan."

Katsuki was bright red and his heart hammering having the cute boy on top of him.

His shock was short lived as the large dragon chirped and crawled into the nest with them. But he was huge and took up most of the space. He curled around them, his neck making a small U in which they laid against his chest.

Kiri huffed and closed his eyes, letting out a soft-

purr as he drifted off to sleep.

Katsuki sighed, resigned to his fate and laid back against the dragons slowly rising and falling stomach.

A hand touched his and he turned to face Izuku with a blush. Izuku smiled softly and laced his fingers in between Katsuki's.

"Good night, Katsuki."

Katsuki's heart almost exploded with warmth. "N-night."
***

Katsuki wakes up when the sun's rays land over his eyes. He groans and goes to move, only to have a heavy body curl around him tighter.

Looking down he sees a mop of green curls. Izuku curled around him like a teddy bear, half of top of him with their legs tangled together.

He sits up and throws Izuku off him. Izuku letting out a small oof but he lands on the soft pillows of the nest so there isn't any harm done.

"The fuck did the dragon go?!" Katsuki growls out as he looks around to see Kiri gone.

Izuku yawned and sat up, "He left early this morning."

Katsuki glared at him, "I am a light sleeper I would have known!"

Izuku shrugged and got up, "Well you didn't wake up!"

He held out his hand to Katsuki, "Lets get some lunch."

Katsuki frowned and blushed, taking Izuku's hand to stand. He went to pull away but the nerd's grip was tight. When Katsuki turned to glare at him he was only met with a soft smile that made his ears hot with a bigger blush

"Yeah, whatever lets go."

***

They ate around the other humans, Katsuki listening to Izuku talk about stupid things like the weather and dragon rituals. It wasn't long before the King got board and grumbled off to explore the large expanse of the cave.

To the one side was a large expanse of pool, steaming with hot mineral water from the volcano. Then it fanned out into some grassy hills where the nests were tucked into near a curved cave wall, protecting them from the elements.

The cave was open, so the sky was visible above. Further in a forest started, the mist from the springs hanging low and giving moisture to low plants and vegetation. Then a river. Water flowing from the springs turning into cooler water as it ran down hills and collected in a -

cool bathing pool.

It was beautiful really. Past the river was richer soil where some crops grew, they even had some chickens and cows. Which made Katsuki think of the dragons swooping up the poor things.

On his way back he tripped, scraping his leg on some thorny bush. He cursed at it before getting up and continuing back to the main camp area.

***

Izuku was sitting next to Ochako, gushing about how she escaped Enji's grasp. On how she got kidnapped, when he noticed Katsuki. He was sitting on the other side of the small fire, snarling as he scratched at his calf.

He watched Katsuki's hand come away, blood on his fingers.

(CW: wound cleaning, infection, its gross)

Izuku excused himself and walked over, grabbing Katsuki's wrist before he continued to mess with his leg.

"What did you do?!"

Katsuki yanked his hand away. "Nothing! A stupid bush nicked me!"

Izuku knelt down and ripped open his pant leg making Katsuki yell at him. But His hard glare made even the King falter.

The wound was irritated from Katsuki's scratching. Red and oozing blood and clear fluid. The area around it red and slightly purple.

"Fuck, its poison." Izuku growled.

"What?!" Katsuki said worried.

"What can I do?" it was ochako, kneeling beside them in worry.

"Grab white veil, its a moss that grows on rocks near the river!" Ochako nodded and looked over at one of the dragons. Somehow communicating as it ran off quicker than either of them could.

"I need a bowl to mix it with sage." He growled as he ripped Katsuki's pants more, making a tourniquet on his upper thigh.

Katsuki hissed as it was tightened. "Careful!"

"You should be careful! Who just scratches at a wound instead of treating it?!"

Katsuki was shocked. Izuku never yelled at him. "It was just a scratch."

"Yeah?! Well this scratch could kill you!"

***

Katsuki watched as everyone rushed around him. It wasn't that serious right? His leg felt sore and oddly numb but that was just cuz he itched it, right?

The dragon, Sero, came back and opened his mouth showing he held the white veil that Izuku asked for.

"Good, chew it for me."

"EW!" Katsuki said in disgust, "You are NOT putting that on me!"

Izuku ignored him and let the dragon spit the mossy paste into the mixing bowl.

Once done he dipped his hand in and smeared it over Katsuki's wound. He hissed, "That fucking BURNS!"

Izuku grabbed Katsuki's jaw and made him face him.

"I don't care if it BURNS! I will not LOSE you!"

Katsuki felt his heart drop to his stomach. Izuku's lip trembled and tears fell from his eyes, "You," he sobbed, "You are so RECKLESS!"

Izuku let go of Katsuki's chin and pushed his face onto the king's chest. Crying and holding on to his shirt.

Katsuki gulped, his own tears gathering and burning in his eyes.

He lifted Izuku's head and wiped away tears with his thumbs as he held his face gently. "I'm sorry."

He leaned forward and kissed Izuku's sweaty, freckled forehead. "I am so sorry. I never meant to worry you."

"Let me protect you too." Izuku hiccuped. His scarred hands going up to take Katsuki's from his face and hold them together in his own. "Please, Katsuki."

Katsuki pulled his hands away to wipe away his tears before they fell.

"You can try." He teased, making Izuku chuckle.

"You are such an asshole." Izuku stood up. "I am going to wash my hands, then you are to stay in the nest for two days."

"WHAT?!"

"You need to HEAL kacchan!"

***

Deku wasn't wrong. It was poison. It wasn't long after their tears that the sweats started. He was helped over to the nest and treated with a cool cloth and more medicine thanks to Ochako and Izuku.

Then the shakes and fever hit. Izuku petting Katsuki's sweat damp hair and reassuring him that fever meant the medicine was working. He was scared. He didn't realize how bad the situation was.

His teeth chattered even though he was sweating buckets. He watched Izuku work on making a potion for him. His head was lite and his eyes couldn't completely focus, but he couldn't stop watching.

How methodically he worked, how his hands moved when he whispered magic into the air, small sparks dipping into the potion like glitter. He poured something in a vial into the new mixture and it went from deep purple to as clear as water.

Izuku propped him up on a bunch of soft pillows and lifted his neck. "Drink."

Katsuki opened his mouth and tried. But he felt so out of it. His limbs heavy and hard to move.

Instead Izuku poured the potion into his own mouth, before leaning over to press his lips against Katsuki's.

His tongue parting his lips as he let the liquid slip in. It was cool and he swallowed it down, grimacing at the bitter taste.

Izuku pulled away to give Katsuki a small peck on the lips. "Sleep." He kissed him again, this time on the forehead.

Katsuki's eyes felt heavy and soon he floated off to sleep.

***

It was early dawn when he opened his eyes next. The sky slowly turning from dark purple to an orange. He saw a figure approaching. Large and red.

Ah, the dragon.

Kiri leaned in close and whined, nuzzling Katsuki's side. Katsuki gave a soft smile before lifting his weak hand to touch the dragon's smooth scales.

"Pretty."

The dragon crooned before turning and bringing a blanket to lay over him. It looked like fur but felt like silk. He ran his hands over the white opalescent fur and teared up.

Riven's Fur. It wasn't real. It was magic infused silk made to look and feel like fur. But it was rare and usually made into small blankets to comfort children. The fabric changing to the wearer's needs.

Shifting from warm to cool, to keep children asleep.

It reminded him of his past. A time he barely could remember when his mother would hold him close in his small Riven's fur blanket and sing him to sleep.

He snuggled into the fabric. Nuzzled against it and the dragon as Kiri settled down beside him.

The dragon letting out deep purrs that lulled Katsuki back to sleep. His heart warm and filled with love.

***

Katsuki hissed as he was woken up with a burning sensation in his leg. He sat up to see Izuku putting more paste on his wound.

"Morning!" Izuku smiled up at him. "You are healing nicely!"

Katsuki frowned, "So can I leave the nest then?"

Izuku stood up and walked over to him.

Placing a soft kiss on his forehead, "Nope."

"FUCK!" Katsuki growled, "I feel fine! Let me walk a little!"

"Last time you went on a 'walk' you got this!" Izuku mocked. Then he looked down at Katsuki, "Where did you get this blanket?"

"I guess its my courting gift." Katsuki ran his fingers through the silky fur.

"Its a good gift."

Katsuki nodded. "So can I leave the nest for food at least?"

Izuku got out of the nest. "If you can walk to me, then yes."

Katsuki rolled his eyes and stood up, only to fall flat on his ass. Izuku laughing and Katsuki flipping him off before trying again and limping over to Izuku.

"See! I'm fine!"

Izuku wrapped an arm around Katsuki's waist to help him walk, "I'll get you a walking stick."

***

After a week, Katsuki was back to is screaming self. Yelling at the golden dragon, Kami whenever the creature would try to prank him by stealing food or trying to pants him.

It was good to see him healthy again and made Izuku smile.

It also made him happy that he could cuddle Katsuki openly. He had longed for Kacchan for years. Ever since he was a young teen.

And now he could casually slip his hand into the others without fear. Katsuki would actually squeeze his hand before lacing their fingers together.

He could snuggle up to him next to Kirishima and fall asleep, his heart warm and a small grin on his face.

Even receive grumpy morning kisses on the cheek from Kacchan.

The cutest thing Izuku came to see was a secret moment between Katsuki and Kiri, when the dragon came early in the morning to bring the blanket.

He faked not knowing where it came from, because he wanted to keep the memory.

Katuski moved to tears, petting the dragon and nuzzling against him with whispers of pretty as he pet him.

It was too cute, but part of him was jealous too. What was his gift? When would he get it?

Maybe Kirishima had been wrong? What if he wasn't really kiri's mate? What if he ended up with only Kacchan?

He was snapped out of his thoughts when a loud thud hit the ground next to him and Kiri boofed loud behind him.

He turned around to see Kiri panting with his tongue out, tail thumping happily. He then turned to look at the ground next to him.

Slightly sunken into the ground by its weight and the fall, was a thick broadsword.

Izuku stood up quickly and let out a happy squeak before covering his face with his hands. His heart hammering excitedly as he saw the symbol carved into the hilt.

A sun.

"What the fuck, deku?!" Katsuki asked as he walked over.

Izuku bounced on one leg then the other. Back and forth in excitement and pointed at the sword.

"Tch, its probably a fake." Katuski grumbled.

***

Legends told of a God of the sun, that battled evil long ago. He left his weapon, a broad sword with his sigil on it, for a future hero. The sword was so heavy only the true hero could lift it.

Or maybe something very strong, like a dragon.

"Izuku, its a fake." Katsuki said as the boy mumbled and looked at the sword closely. Reading over the ancient engravings and trying to decipher them.

Izuku planted his feet on either side of the hilt and knelt down.

"You're gonna break out your back!" Katsuki yelled.

Izuku lifted as if to pull up something extremely heavy and ended up falling over when the sword lifted as if it weighed only 20 pounds.

He held up the sword with both hands, laughing hysterically as he laid on the ground.

"Fucking hell." Katsuki stared and ran a hand through-

his hair. Shocked and worry written on his face.

***

Izuku dropped the sword, the weapon landing with a heavy thud, as he scrambled to get up of the ground and run over to Kirishima for a big hug.

He wrapped his arms around one big leg and hugged him tightly saying many thank you's.

Katsuki went over to the sword and bent over to pick it up...

Only to fall on his ass. The sword unmoved.

There as deep laughter behind him from Kami. Katsuki stood up and glared at the dragon.

"Fuck off sparky!"

Kami only let out a bark in reply before turning his attention to Shinso.

Katsuki turned to face Izuku and Kiri.

Izuku was petting his snout while talking softly to him, leaning against the dragon's neck. His face pressed against him intimately. Kiri letting out a soft croon and leaning into the petting hug.

Katsuki blush. "Hey!"

***

Izuku was so happy about his gift! The sword as old though and needed some love and care. He spent some weeks oiling it and using a whetstone to sharpen it.

He was out in the clearing, practicing his swings when the earth seemed to shake and he heard Kacchan's explosions.

His heart nearly stopped in worry as he ran over to the noise. The wind blowing fast past his face, the tree limbs hitting his arms as he panted for air.

When he came to the noise he sighed in relief.

It was just Kacchan and Ei playing. The big dragon would jump at him with a playful pounce only for Kacchan to jump away and blast him with his magic.

The explosions doing no harm the Kiri's hard scales.

Kiri turned and saw him and Izuku smiled only for it to faulter as he saw the dragon lower himself and wiggle his hind legs.

"NONONONO!"

"YOU BETTER RUN DEKU!" Katsuki yelled with a laugh before the dragon lept at him.

Izuku let out a squeal and ran away as fast as he could, holstering his weapon. Kiri fast at his heels letting out small growls to scare him.

Izuku panted and took a sharp turn, going back around to run towards Katsuki.

"OH HELL NO!" Katsuki yelled before he started running away from Izuku.

"What's wrong kacchan?!" Izuku laughed. Izuku was a faster runner, easily passing him.

"FUCK YOU!"

Katsuki used his magic to propel himself forward.

"THAT'S CHEATING!" Izuku yelled before his breath was taken away by a large force hitting his back as Kiri tackled him.

Izuku rolled over with a laugh, looking up at the big red dragon that pinned him.

"Okay! You got me!" He patted Kiri's arm hoping to coax the giant off him.

Kiri stopped panting and turned his head to the side before getting a smirk. Without warning, Izuku got a big wet lick from the dragon, going from his stomach up to his face. Giving his hair a cow lick.

"NOOOOOO!"

Kiri did it again, and Izuku could hear Katuski laughing in the background.

Only for Kiri to turn his attention to him.

"NO! GO AWAY!" Katsuki yelled before Kiri ran after him.

***

Katsuki, and Izuku were covered in dirt and dragon saliva by the end of the day. The two men stood by the river undressing and getting ready to clean.

Kiri already in the large pool of the river, underneath the waterfall. Letting the water run over him.

Kiri stood from his crouched position in the pool, the water lowering and flowing faster as he unblocked the water way.

He lifted his wings in a stretch to the the waterfall rush over them.

Rainbows scattered around the mist that fell from him with the setting sun shining its last ray's on the red dragon.

Both Katsuki and Izuku stared in awe of him

Kiri let down his wings and stared at the two men and walked forward.

Izuku gulping as he watched the dragon's cock slowly unsheath. Showing its deep red, slicked up cock hanging heavy between his legs.

"Shit." Katsuki breathed out next to him.

Kiri let out a deep growl.

Walking slowly past them and letting his tail brush past their own erections before he sauntered off.

Izuku let out a small whine when the dragon left. His heart hammering and cock hard. His body hot with interest.

"Fuckin perv." Katsuki whispered out before turning to splash Izuku. "Quit fuckin' day dreaming and get washed."

***

Night came and they all cuddled up in the nest to sleep. Izuku was almost dozed off when he felt Kiri nudge against his legs.

Izuku's heart hammered, his cock stirring as he remembered what he saw at the river.

He gulped and opened his eyes to look at Kiri who had his face between his legs. Izuku looked over to his side where Kacchan slept under his blanket, curled against Kiri's stomach and neck, that curled around to where Kiri's head currently laid.

Kiri let out that deep growl again. He felt it more than heard it. His heart was racing as he hooked his thumbs in his pants and slowly pulled them down and off.

Leaving his bottom half naked, exposing his hard cock.

Lust warmed his body with a blush as he exposed himself. Kiri didn't wait, opening his mouth to take a long lick over his cock. His tongue lapping over his entire cock in one wipe.

Izuku let out a muffled moan and spread his legs open more, rutting his hips against him.

His tongue was so warm and wet! His hands clutched the blankets under him, whimpering as the dragon continued to lick at him. Kiri nuzzled under his balls, sniffing him there and it made Izuku run even hotter in lust.

He rolled over and laid his chest against the dragon's torso, pushing out his ass and spreading his legs.

He let out a loud whimper as Kiri started to lick at his taint and balls, before going over his hole.

***

Katsuki woke up to the sound of panting. His brows furrowed in confusion until he heard a erotic moan from behind him.

His eyes opened and he blushed, quickly turning around.

Izuku was leaning on Kirishima's stomach as the dragon slowly pushed his tongue into this hole, stretching him open. Deku writhing and drooling, face red with heat.

Katsuki was definitely awake now. "You nasty pervs." He panted out, tossing his blanket off his body.

He moved over to Izuku and gripped his chin, turning him to face him before stealing a dirty kiss. His tongue delving in Izuku's open panting mouth to lap and suck at him.

He pulled away only for Izuku to grab a hold of his shirt. "Kacchan, kacchan!" He moaned rutting back against kiri's tongue.

He kissed him hard again, "Shut up!" He hissed as he took off his own pants, freeing his erection.

Kirishima moved away and rolled over, making Katsuki and Izuku fall against his exposed stomach. Both men looked up to see his dark red dragon cock slipping free of his sheath again.

Slick with precum, the head tapered with ridges down the shaft and a knot at the base.

Both Katsuki and Izuku moaned at the sight. The cock was as big as Katsuki's torso, it would NEVER fit in them.

Katsuki reached out and stroked the warm wet cock. Kiri letting out a moan and closing his eyes.

He turned to look at Izuku to see the other man moving to straddle the dragon's cock, rubbing his own erection against it.

Katsuki smirked, "Good idea."

Katsuki joined him. Climbing on top of the dragon so slot between his cock and stomach, while Izuku rutting on top; essentially sandwiching the large dragon cock between their bodies as they rocked against it.

Kiri's cock was hot and wet, it throbbed as the rocked their hips against him. Their balls and cocks rubbing over the smooth skin of his member.

Katsuki leaned up and licked at Kiri's slit as precum dripped out. Izuku whined and leaned forward to lap at the cock heat as well. Wanting a taste of the dragon for himself.

Kiri let out a whine and rolled over suddenly.

Izuku on the nest and Katsuki above him as the dragon hovered over their bodies, fucking into the space between them.

Katsuki leaned down and hugged Izuku closer, making the space smaller. Kirishima moaning at the tighter space and fucking faster.

Katuski was burning with need, watching the thick cock thrust between them; seeing how fucked out Izuku looked beneath him covered in the dragon's precum and his own sweat.

Izuku shiver and gave out a small cry, his hips jerking as he came first. The sight alone was more than enough for Katsuki as he felt his orgasm erupt from him.

"Shit, fuck, FUCK!" He moaned out cumming all over the dragon's cock.

There was a deep growl and suddenly the cock between them was twitching. Spraying large globs of warm cum onto Izuku and Katsuki alike.

Izuku moaned loudly as he came again. The feeling of the warm cum on him making him spasm out into a dry orgasm.

"Fuckin' shit." Katsuki panted.

Kiri moved and looked down at them. licking at Izuku and Katsuki.

Katuski grimced, "Stop it! Lets just go get cleaned up."

***

That was the first time they rode Kirishima. Climbing onto his back with the ruined blankets, holding on as the dragon, somehow, silently walked to the river.

Kiri went to his spot under the waterfall as Katsuki and Izuku got fully naked and into the water for the second time that day.

Katsuki was had just surfaced after dunking under the water when Izuku grabbed his arm tightly.

"What?!" He growled only to follow Izuku's gaze back to the waterfall where Kirishima was.

His jaw dropped.

There was a shimmer of magic as Kirishima's shadow shrank behind the waterfall. Wings pushed out, parting the water to let the HUMAN kirishima walk through.

He was large, just like his dragon form was, and built like a mountain of muscle. Tanned skin dotted with ruby red scales on his shoulders, neck and sides of his face.

Black horns curving over a long red mane of hair.

Dark red hair traveled over plush pecs and down sculpted abs to a happy trail that led to a smaller version of his dragon cock.

Still large for a human, but way smaller than before.

And also HARD like before.

Kirishima walked into the water and slowly over to them, letting out a deep croon. Smirking when Izuku let out a sigh of a moan, and Katsuki blushed from head to toe.

The smirk revealing sharp teeth.

"Mates." He purred out, voice heavy and thick like molasses.

"Fuck me." Izuku moaned out.

Katsuki gulped, "Shit."

***

Kiri walked over to Izuku the green haired man only coming up to the dragon's chest. "Beautiful mates." He purred out before grabbing Izuku's chin and bending down to kiss him.

Izuku whined and wrapped his arms around him quickly, pressing his body against him needily. Katsuki watched, lust curling in his belly, as the two kissed. Open mouthed, with tongue, Izuku letting out lewd moans and rutting against Kirishima as they kissed.

Kiri pulled away, licking his lips as he looked up with lust filled eyes to look at Katsuki.

"Come." Kiri growled, opening an arm as invitation to him.

Katsuki didn't argue. Walked over as if in a trance and let Kirishima pull him in for a kiss. Katsuki only a head taller that Izuku.

"Kacchan." Izuku sighed as he watched Kiri kiss his King.

Katsuki letting out a moan as he was practically tongue fucked by the dragon.

Kiri pulled away, both of his hands on the backs of his mates necks. "You too."

He pushed them close.

Izuku didn't wait. He wrapped an arm around Katsuki's waist and pulled him close to kiss his lips. Shy pecks against wet plush lips until Katsuki growled and wrapped his arms around Izuku. Devouring his moans in a deep kiss.

Izuku tasted so good. KIRI tasted good. Katsuki was feeling light headed with need. Rutting his cock against Izuku who whimpered and did the same. Heat rushing through his body as if he were drugged.

Both men groaned when kiri gripped their hair and pulled them apart.

"Fuck you now." He panted before lifting Izuku into his arms.

Izuku let out a playful squeak of surprise. Kiri walked them over to the river bank and placed Izuku down on the blankets they had brought to clean.

Izuku on his hands and knees, leaned down. Pressing his chest to the soft blankets and ass up in the air. Letting out a whorish moan as Kirishima gripped his hips and let his cock rub between his ass cheeks.

Katsuki followed them. Kiri turned and wrapped an arm around Katsuki's waist to bring him closer.

Katsuki knelt down beside the large man and started to kiss him as he slowly sank his cock in to Izuku.

Izuku let out a deep moan as he pushed back, letting the thick cock spread him open. Katsuki let his hand grope the large pec on Kirishima's chest as he playfully bit at the dragons lip.

Kiri's hand slid down Katsuki's back and grabbed his ass, making him moan in surprise.

"Such good mates." Kiri moaned as his hips met Izuku's plush ass, and his hand groped Katsuki's.

"Fuck me, fuck me! Oh shit please, Kirishima!" Izuku sobbed. Tears already falling down red cheeks as he tried to move himself on Kiri's cock.

But kirishima held him close with one hand, strong and unmovable. He looked at Katsuki and gave him a small kiss on the lips before bending over Izuku's small body.

"Alright, little mate, hold on."

***

Kirishima was huge. Dwarfing Izuku underneath him. His thick arm wrapping around his torso, under one arm, as his hand held his shoulder. Kiri's other arm bracing himself on the ground.

Kiri grunted as he pulled out slowly and pushed in at a slow, pleasurable pace. Izuku shook with pleasure beneath him. Mewling as he was repeatedly spread open on the thick dragon cock.

Izuku's cock hard and dripping between his legs, leaking precum as it twitched.

Kiri's cock pressing slow and hard against his prostate making more precum leak out with every pass.

Izuku was panting. Feeling full, feeling dominated and so small. He was drooling all over the blankets, his eyes half lidded and unfocused.

He let out a shout when Kiri started to fuck him faster. Panting above Izuku's head, moving his hair as he started to REALLY fuck into him.

"Yes, yes, yes, fuck me!" Izuku chanted, legs spreading wider and thrusting back against Kirishima's thick hips.

Kirishima pushed down fully, his arm moving into a push up position on either side of Izuku's shoulders. His hips slamming down and making Izuku fall completely to the ground, legs spread as Kiri pounded into him.

Izuku couldn't catch his breath. Kiri hitting him hard and fast. Every breath in was only rushed out in a moan as that cock was rammed back inside him.

Kirishima leaned down and put his arms under Izuku's, their bodys flush together now, chest to back.

Izuku screamed hard, eyes rolling back as he came hard. Body shaking under Kirishima and milking the dragons cock.

"FUCK FUCK FUCK!"

Kiri didn't stop and it only rung out another orgasm from the smaller man.

Kirishima pushed in as deep as he could, his knot popping in and locking him to Izuku as he came with a low moan.

He leaned down and bit hard at Izuku's neck. Izuku letting out a whine at the pain of the bite but the pleasure of being filled by the dragon's hot cum.

Kirishima lifted up off Izuku, his cock still inside him due to his knot, and looked up at Katsuki. His eyes still full of lust, his long red hair hanging over his eyes as he licked his lips.

"You're next."

Katsuki's cock twitched and he held the base of it trying not to cum.

***
Kirishima leaned back on his knees, taking Izuku back with him, making the boy whimper on his knot. He extended an arm to wrap around Katsuki's small waist and pull him close.

Katsuki was standing, so ti made his knees collide with Kiri's shoulders and chest.

Kiri's large hand moved down to grope his ass, a large finger slipping between katsuki's plush globes to rub over his hole. Katsuki gasped as lust crackled over his skin like a heat wave.

He was manhandled like a doll. Picked up by strong arms to straddle Kiri's broad shoulders. His hands holding on to his black horns as he dragon started to lap and suck on his cock.

"Fuck!" Katsuki moaned and tried to hump against that sinful mouth.

But the angle was odd and he couldn't move right. One of Kiri's hands moved to start to rub and slowly press on his hole, making Katsuki choke on his moans and shiver in the mans arms.

Kiri pressed his finger inside Katsuki as his mouth sucked down his cock. Katsuki's thighs trembling and toes curling at the pleasant feeling. Gripping Kiri's horns and hair for dear life.

Kiri continued to suck and finger him until Katsuki had three of his fingers fucking in and out of him. Drooling and moaning, hunched over Kirishima's head.

Kiri moved him easily off his shoulders and down to his lap.

He looked around a bit confused when he landed on Kiri's thighs and not Izuku. When had he moved? He turned his head around to see Izuku laying on his back, eyes half lidded in a lustful type of daze, watching Katsuki.

Kiri gripped his jaw and made him face back to him. Giving a bruising kiss that made Katsuki melt.

"Pay attention." Kiri growled and Katsuki could only nod.

Kiri laid back with a sigh, flinging Katsuki forward on his chest. Katsuki bracing himself on soft pillowy pecs. Kiri straightened out his legs before thrusting up between Katsuki's ass cheeks.

"Ride your dragon, My King." Kiri purred out.

Katsuki rolled his eyes with a moan, his cock twitching as the words made fire in his stomach. He opened his eyes and smirked down at Kirishima.

"Alright, hold on, big boy."

Kiri's hands held on loosely to Katsuki's hips. Katsuki leaning forward on one arm, supported by Kirishima's chest, as he lined up the cock to his entrance.

Slowly he sank down on the lubed up cock. Easily sliding down with the mixture of spend and precum.

He was panting by the time he had Kirishima fully inside him. His legs spread wide on the large man beneath him. HIs toes barely brushing the ground at his sides.

Kiri let out a low croon and rubbed at Katsuki's hips and thighs in appreciation.

Katsuki felt a thrill run through him at seeing Kiri look so debauched beneath him. He groped Kirishima's large plush pecs.

Kiri moaning and grinding his hips up into Katsuki.

Katsuki had to move his legs, bending them to hook on Kirishima's thick thighs in order to get purchase and start lifting himself. Slowly he rose up and back down on the large dragon cock.

He whimpered. It wasn't enough. He couldn't rise high enough to get what he wanted.

He looked up at kiri. their eyes meeting and the dragon groping Katsuki's ass.

"Use me." Katsuki panted. "Please."

Slowly Kirishima's arms flexed and lifted Katsuki with ease. All the way up until the tip of his cock was the only thing inside him, before slamming him back down.

Katsuki arched his back, mouth open in a silent scream of pleasure. His nails trailing red marks down Kiri's tanned chest.

He was panting for air, body red and burning. He looked down and licked his lips, "More!"

Kiri shifted so that his feet were flat on the ground and gave Katsuki a wicked grin, "My pleasure."

He lifted Katsuki again and slammed him down, just as he made his hips thrust up.

Then he did it over and over and over again. Katsuki holding on the best he could. Trying to catch his breath but only being able to moan and sob.

Eventually his arms gave out. Katsuki laying on Kirishima's chest as the dragon used him like a cock sleeve.

He was drooling. His mouth open with constant panting and moaning. His mind foggy. The only thing running through it was the amazing pleasure coursing through his body.

Katsuki's legs slid back down off Kiri's thighs as his body started to tense with his approaching orgasm.

"There! RIGHT THERE!" Katsuki gasped. His nails digging into Kirishima's skin and leaving welts. His toes curling and back arching. His hands pushing against Kiri's chest so that he arched up.

He let out a sobbing moan as he came all over Kirishima's stomach. Tears and drool running down his reddened face.

Kiri slammed him down hard. His knot popping in as he came with a loud growl.

"Oh shit!" Katuski gasped as his body shook again. Orgasming but not cumming from the feeling of Kirishima's warm cum filling him up.

Kiri sat up, cradling Katsuki to him as he leaned down and bit him on the shoulder, just as he had done to Izuku.

Kiri licked over the mark and purred as Katsuki rested against him.

Katsuki could feel Izuku at his back as the boy leaned forward to kiss kirishima, before turning Katsuki's head to give him a sweet kiss on the lips.

Katsuki looked up, then both him and Izuku turned and kissed Kirishima on the cheeks.

The dragon let out a cute chirp that made both of them smile.

-End