Author's note: Thank you all for the amazing love and support to this AU this chapter wouldn't have happened without the help of Thursday26 who happened to help me write the smut! And a massive thank you to the fellow members of the Toothcup discord, who keep seeing my new prompts and other things and my usual thank you to my beta Jjosiah98 for listening to my ideas x). My social media handles:

Twitter: @RoseRozu1

Tumblr: @RoseRozu22

Discord:RoseRozu#2428

Trigger warning: The word cunt is used occasionally instead of vagina, among other names. This chapter contains NSFW content, which means if you aren't a legal adult, please skip this chapter. Thank you.

Toothcup

Winter came and went, allowing the plants to grow and animals to come out and feed. In the village of Berk, it was a time of celebration and sadness as those from the nest hunt returned. Those that made it back were warmly embraced by their loved ones. Those that didn't were mourned. Though there was one family that didn't have a special moment. Stoick the Vast paid no mind to the fact his son was not present. And Hiccup? He wasn't in the village in the first place. He was out doing something much more fun with his best and only friend, the Night Fury named Fannar. (Though Hiccup doesn't know this, still calling him 'Toothless'.)

Toothcup

Flying high over the water, a pitch black dragon with a small boy on his back glided through the air. Hiccup looked back over the tailfin, making sure it wasn't coming apart before nodding to himself.

"Okay bud, we're gonna take this nice and slow. Here we go. Here we go... position three, no, four." With a push, he changed the pedal position and in turn the tailfin position, looking back and smiling when it worked without a hitch. "Yes, it worked!" His joy was short lived when, due to his lack of focus, they ran straight into a sea stack.

"Sorry!" Fannar grumbled, then growled in annoyance when they ran into another sea stack. "My bad!" Flicking his head, the dragon slapped Hiccup with one of his ear flaps. "Yeah, yeah, I'm on it. "Position four, no, three."

Moving his foot again, they angled up and started climbing quickly. "Yeah, go baby! That's it, haha, oh this feels amazing. The wind in my- CHEAT SHEET! Stop!" Obeying, the dragon drifted to a halt, but the momentum carried Hiccup further up and detached him from the saddle. Boy and dragon only had a moment to look at each other in horror before they fell, screaming and roaring in fear.

If you asked Hiccup later, he wouldn't really be able to describe what happened. One moment they were falling, then he managed to hook back in and level them out, only for a large maze of sea stacks to block their path. As they got closer to their impending doom, something clicked inside of him. It was like a spark, like something happening deep inside him that connected him to Fannar. Then suddenly they're once more in the open air, celebrating. They quickly made for the nearest open landmass, catching a meal of fish on the way. Even then, Hiccup could feel that strange energy flowing through him, pulsing just under his skin.Their flight is over, solid ground under them, but Hiccup can still feel it pumping under his skin.

It didn't fade even as he began to explain to Fannar how crappy his life is in the village, how everyone treats him differently and like he doesn't belong. He doesn't like to think of how everyone looks at him weird and talking about it, or even thinking about it, will mellow him out even on the best of days, but this time it's different. He just feels this need to tell Fannar these things, to open himself up to the dragon. He wonders if Fannar feels the same way, too. He thinks that might be the case, with the way Fannar is looking at him.

When he finally finishes telling his life story, the dragon is still staring at him. Hiccup feels like maybe he should be scared, with a dragon, a Night Fury no less, looking so intensely at him, but instead he feels warm. He looks away first, blush staining his cheeks. Hiccup isn't sure why he suddenly feels so shy since he just told so much to the dragon. Fannar has never treated him like he's lesser or a freak. He looks back and Fannar is still staring at him, but he's closer. The hair on Hiccup's arms raises and he shivers.

Fannar scoots closer and Hiccup doesn't turn away, curious and his heart beating faster. Hiccup isn't sure what's going to happen next, but he wants to find out. Fannar gets close, his breath hot over Hiccup's neck, yet Hiccup shivers again. He's not sure what compels him, but he leans forward, completely intoxicated by Fannar' presence. Hiccup isn't sure what he's doing, but he closes his eyes and tilts his head, fleshy lips coming in contact with Fannar' scaly ones.

Hiccup feels warm all over, his heart racing. He's never kissed anyone before, and he worries that he's doing it wrong, but Fannar makes this growling noise and pushes even closer. Hiccup moans, heat shooting up from his stomach. He's never felt like this with anyone before, but he isn't going to stop. He wants to see where this goes, needs to see where this goes.

Fannar keeps on moving closer and closer until Hiccup is lying down on the ground, completely covered by the massive dragon. Hiccup whines, fear and arousal rushing through him. Fannar, he knows, is big, but underneath him like this, he feels even bigger, and there's a heat coming off him that makes Hiccup's mouth dry.

Hiccup has his hands on Fannar' jaw, sometimes stroking under the nubs there, making the dragon growl slowly. Each growl is another pulse of arousal through Hiccup. Hiccup shifts his legs, hyper aware of the wetness inside his pants and how hard he is at the same time, his growing erection pushing against his leggings. It almost worries him that it's his time of the month again, since he's only ever been wet down there at that time. Maybe he should feel self-conscious over it, but even if that's the case, he doesn't think Fannar would judge him. He feels safe with him, safer than he's ever felt before.

Fannar pulls away and Hiccup whines, but the dragon starts nipping and licking over Hiccup's neck. He pushes at Hiccup's collar, flicking his tongue onto Hiccup's chest as much as he can with the clothes in the way. The dragon saliva is thick, thicker than anything Hiccup has come across before. Well, nothing that's still this viscous and slippery and holds heat. It's all still so warm. Fannar growls and paws at Hiccup's tunic.

It takes Hiccup a moment to register that Fannar wants him to take off his shirt and he hesitates. He knows he should probably be doing this kind of stuff with his future husband or wife, but... when will Hiccup get a chance like this again?

He sits up and shrugs out of his shirt, tossing it to the side. Fannar pushes him back down as gently as he can and starts licking Hiccup's chest and stomach, sometimes teasing the skin with the sharp edges of his teeth. The skin never breaks, but that element of danger has Hiccup's breathing picking up. He also starts moaning, especially when Fannar focuses his attention on his nipples, or this one spot along his right side, on his rib cage. He's not sure why, but attention to that spot has Hiccup feeling like jelly.

Then Fannar' tongue runs over the hardness stretching out Hiccup's leggings. Hiccup's knees fall open and he moans loudly, grateful that they're not near the village. Fannar focuses there, wetting Hiccup's leggings further with saliva until they're heavy. Fannar paws at the pants, too. Hiccup hesitates again, not for the same reason as last time.

Underneath his leggings, he knows he's different. Sure, he trusts Fannar, but he's still scared to show anyone what's in his pants. Fannar seems to pick up on his fears and purrs comfortingly, coming up to Hiccup's head and nuzzling him. That small touch helps Hiccup relax, his shoulders going lax against the ground. "I know, bud," Hiccup whispers, running a hand over Fannar's jaw. "I just... I don't want to disappoint you."

Fannar pulls back, giving him an incredulous look, then shakes his head. He leans down and kisses Hiccup again, like it's a promise that he won't be disappointed, that he likes Hiccup already, and that won't change no matter what. That's what it feels like. And Hiccup trusts Fannar.

With shaking hands, he carefully undoes the laces of his leggings and pushes them down, raising his hips to get them off. Once his cunt hits the open air, Fannar pulls back, nostrils flaring. Fannar licks his lips and moves quickly, grasping Hiccup's leggings and trying to pull them off. "Hey, hey, hey," Hiccup says, pushing at Fannar' nose. Fannar stops, but doesn't let go of them, growling at Hiccup. Hiccup knows he should feel scared, but he glares at Fannar. "Don't rip my pants. I don't have any spares and you've already soaked them through."

If Hiccup didn't know any better, he would think that Fannar looks smug at that. Hiccup sighs, shaking his head and continues pushing down his pants, Fannar trying to tug as well to hurry it up. Once they're past his knees, Fannar takes over, raising his head and knocking Hiccup onto his back. "Hey!" Hiccup says, getting to his elbows and trying to bat Fannar with his feet. Fannar playfully growls and dodges the feet, but does stop trying to tear them off. "At least let me get my shoes off," Hiccup mutters, laying back and trying to slip his shoes off. "Impatient reptile."

Fannar huffs, sitting on his hind legs and tapping his claws. Hiccup shakes his head and manages to get them off. Once clear of his feelings. Fannar jumps forwards again and eagerly pulls the leggings off, turning them inside out in the process. While Fannar tosses Hiccup's pants somewhere, Hiccup is quick to remove his underclothes, leaving him completely bare. It's only in this moment that Hiccup realizes that he's completely naked. He shouldn't be naked like this, not before he's married.

But Fannar is on him again and he chases those thoughts away rather quickly. He licks over Hiccup's chest, but moves down a lot faster, licking his stomach and spending some time licking his cock. Hiccup cries out at the sensation, heat pulsing through his belly. Then Fannar focuses lower, where Hiccup is the wettest.

Hiccup nearly screams at the feeling of Fannar' strong tongue licking up his cunt. He's not sure how he should feel exactly, but Fannar doesn't give him enough time to think, licking him again, sometimes licking the insides of his thighs and teasing with the edges of his teeth again. Hiccup is in heaven, then it gets better.

Fannar pushes his tongue inside and Hiccup's eyes roll back, legs falling further open and arms going limp at his sides. Everything is so hot, inside and out, his cunt, his cheeks, his chest. Then Fannar's tongue starts thrusting in and out, dragging along Hiccup's insides and dragging deep moans of pleasure from Hiccup's chest. Fannar' tongue flicks up at the end, hitting something inside Hiccup that has him want to scream. Instead he clamps his legs around Fannar' head and holds onto some of the nubs there.

Fannar doesn't let up, tongue flicking over that spot relentlessly. Hiccup cries out, curling up and shaking. He doesn't know what's happening, but it feels amazing. It's starting in his stomach and flaring down through his cunt. "T-T-Tooth-Tooth-" Hiccup tries to say, but he's trying too busy trying to remember how to breathe. Then it happens.

Something bursts from inside Hiccup, making his lap more wet. He screams, arching his back and desperately holding onto Fannar as he rides out the pleasure that lingers in his body, Fannar' tongue still inside him, gently massaging his insides then pulling out and lapping up all the wetness there.

Hiccup lays back on the ground, arms next to his head, trying to get his lungs to start working again. Fannar' tongue doesn't let up, continuing to lick over Hiccup until there's only saliva there. Then he licks up, moving over Hiccup once more. Small licks, teasing over nipples and the side of his neck. Hiccup shivers, pleasure bursting from every place Fannar touches.

Then there's something hot and heavy that settles between Hiccup's legs. He sucks in a sharp breath and looks down, eyes going wide at what he sees. Fannar had gotten quite excited himself, with an erection that was hard and big and resting against Hiccup's mostly soft cock. It was so big in comparison, warm, and wet. Fannar ruts against him and Hiccup moans. Maybe he should try to stop this, but does he really want to? Fannar rumbles, as if asking for permission and Hiccup's heart swells.

"Y-Yes...please," Hiccup pants, tingling and tensing, debating on if he should watch what happens next or not. In the end, curiosity wins out and Hiccup watches Fannar hump him a few more times then pull back slightly.

Hiccup's breath hitches when he feels the tip of Fannar' cock at the entrance to his cunt. It's slightly tapered, finding his hole easily and sliding inside. Not fast, just the tip, but Hiccup can't watch anymore, head falling back, moan falling from his lips. Fannar feels so hot inside, foreign yet familiar. Hiccup falls flat onto his back, covering his mouth with his hands, scared he's going to scream.

Fannar growls, as if in disapproval, and noses Hiccup's hands away from his face. Hiccup whines and runs his hands over Fannar' jaw. Then Fannar starts moving, pushing his cock further inside, splitting Hiccup down the middle. Hiccup cries out at the feeling. The tip was easy to take, but his cock gets thicker the further down the base it goes. Hiccup's virgin cunt is being stretched to its limit.

Just when it feels like it'll be too much, Fannar draws back. He doesn't pull out, but the stretching feeling eases, and then he thrusts inside again, going no farther than the first time. Hiccup moans, back arching and legs falling further open. Despite the new feelings, everything feels so good.

Fannar continues thrusting in and out, introducing his cock deeper every few thrusts until Fannar' crotch presses into Hiccup's pelvis. Hiccup can't help the moan that escapes him. Fannar is entirely inside him, all that cock, that huge cock, is filling him completely.

Without thinking, Hiccup runs his hands over his stomach, choking on air when he can feel how deep Fannar is inside him. As Hiccup rubs over it, he can feel the Fannar twitch. "Oh gods," Hiccup pants, not sure what he should do, but it feels right to move his own hips.

It feels amazing and Fannar growls, grinding against him. But only for a little bit, because once it's clear that Hiccup is only feeling good, Fannar starts to thrust.

Hiccup loses track of things after that, his entire being focused on the dragon's cock driving in and out of him, the wet sound that's made when Fannar pulls back, the dull thudding sound when Fannar pushes inside, making their bodies collide. The way that Fannar' cock drags in and out of him is glorious. He's sure he's making noise, but he can't hear himself over the blood rushing in his ears.

Something presses against his opening, large and hot. Hiccup wants it inside him. He doesn't know what it is, but he wants it, desperately. He tries to use his legs to get some leverage and it stubbornly refuses to get inside him. Fannar growls, his thrusts getting harder and harder. Hiccup almost worries that he'll bruise. Almost. He's more worried about getting that thing inside him.

The thing gets inside his opening and things go white, his eyes rolling back and pleasure firing through him faster than a Night Fury's flight. He thinks he can hear Fannar roaring, but he can't be sure, but he can feel something warm filling him. Hiccup twitches, feeling higher than he's ever been before.

Fannar roars, parly from pleasure, partly from frustration. His human mate is so small and different, so his knot only caught halfway. Fannar will slip out of his mate before he can properly breed him. Not to say he didn't enjoy this session, the way that Hiccup moaned and cried underneath him, even if he was muttering that nickname over and over again. One of the first things Fannar will be sure to share is his proper name.

Fannar doesn't blame his mate for the bond not taking the first time. Humans are probably unaware of how bonds work and Fannar was so taken by his sweet human that he got lost in the pleasure. He nuzzles Hiccup's head, ruffling his hair with his exhales. Hiccup is limp with pleasure, body still twitching around Fannar's cock. It feels amazing, but Fannar hopes to feel that around his knot, fully around his knot.

There's also the issue with the bond being incomplete that Hiccup doesn't smell like his submissive. No one can tell who he belongs to. Well, he does smell like Fannar right now, but that'll wash off whenever he bathes. Hiccup needs a proper boding mark to imbed Fannar's scent into his mate. This position is also not ideal for leaving a bonding mark. It would be uncomfortable for Hiccup and Fannar wouldn't be able to get a good enough grip.

Just as Fannar expected, their tie ends prematurely, his cock popping out of Hiccup, his hips falling to the ground and Fanner's seed continuing to shoot onto Hiccup's stomach and privates. Even though he likes seeing and smelling Hiccup marked with his seed, there's still the uncertainty of their bond. Without direct stimulation to his knot, his cock stops shooting seed. It's not unusual to spurt a few more times, but in order to get it out, he needs something around it.

Without the complete tie, Fannar feels tension enter his body again. He needs to finish the bond. He looks down at his tiny mate, heart swelling at the beauty relaxed under him. Hiccup has his arms to the side, legs spread wide, body covered in their shared arousal, and a beautiful pink flush on his cheeks. Hiccup's opening is darker than it was when Fannar first saw it. Fannar shivers, remembering the sweet nectar he got from there. He can still taste it on his tongue.

Carefully, Fannar nudges Hiccup to roll over to his knees. Hiccup makes confused noises, but compiles. When he's in place, Fannar takes a moment to take in the view. Hiccup is beautiful, back covered in some dirt and debris, his thighs wet to his knees, his cunt glistening and his cock dangling between his legs. Fannar has never felt so drawn to a creature before in his life. Although the best thing he sees is his seed leaking from Hiccup, dripping down.

Fannar should be more concerned that his seed isn't planted deep enough, but he can't deny the rush of pleasure he feels when he sees it. He's tempted to lick there again, but he doesn't want to change the taste of Hiccup's nectar before their bond is complete. Fannar is certain that their combined taste would be irresistible.

Fannar shakes his head and crawls over Hiccup, covering his mate's body with his own again. Hiccup's breath hitches. "Toothless?" he asks.

Fannar wants to growl, but instead he purrs and nuzzles Hiccup's head, reassuring him. There's no way to tell Hiccup exactly what needs to happen, not with words anyway. His cock, still achingly hard, teases against the wet cunt. Hiccup moans, moving his hips back. Fannar licks Hiccup's shoulder and slowly enters him again.

Hiccup drops from his elbows to his shoulders, hips pressing back and pushing Fannar in faster than he wanted to move. But could he deny his mate? Fannar rumbles, completely sheathed in his mate again. Hiccup is making noises of pleasure, writhing against him. Fannar knows this round won't be as long, but he fully intends to get Hiccup to his pleasure first. Like any good dominant would.

He starts to thrust, able to move faster this time partly because Hiccup is already used to Fannar's cock, but also because the entry is smoothed by his seed. That appeals to something deep inside Fannar and he thrusts inside harder, grunting and panting. Hiccup cries out, his hands digging into what little earth there is on top of this sea stack. "Tooth-!" he cries out. "I'm--oh gods! It's happening--it's happening again!"

Then Hiccup lets out a scream that's so loud that any dragon would be jealous. Hiccup convulses around him, almost shaking apart. Fannar's knot pops so fast, he goes dizzy, but this time the knot is fully inside. Hiccup cries out, his insides milking Fannar in a way that almost has him losing his footing. Thankfully he kept his feet and his sense enough to complete the bond.

Carefully, he gets Hiccup's right shoulder in his mouth, making sure he's in the best position, and extends his teeth, marking his mate. Immediately he can feel the bond take, another rush of pleasure going through him. Hiccup must feel something similar, because he's climaxing again.

Toothcup

Later that evening after many hours of sex, Hiccup and Fannar are seen lying down with Hiccup's head resting on Fannar's chest and a regulated fish head off to the side. As much as they both wanted to stay here like this, the sun was setting and bringing the day to a close. Reluctantly, Hiccup pushed himself up, looking around for his clothes.

"I have to go back to the village now, bud. My father should be home soon from his nest hunt since it's been about two or three months since he left." Fannar whined in disappointment, but nodded as well. He didn't want to let his wonderful little submissive go, but he knew it would be bad if his human didn't get back to the village.

Once Hiccup was changed, they flew back to the cove, the duo sharing one last kiss before Hiccup slipped under the shield and left for Berk. Little did either of them know, however, was that some of the potent Night Fury sperm left in Hiccup's cunt was on the move as well, heading up and into the boy's ovaries.