The New Flock

Astrid stumbles through the forest of New Berk with a fresh bite wound with marks that were about an inch apart and ran from the top of her neck down to her left shoulder.

She didn't even know what bit her, all she knew is that she was going on an early night stroll through the forest when something suddenly jumped out of a bush and bit her right on that spot. The bite wasn't deep enough to cause any serious damage, but that didn't mean it didn't hurt like hell.

She knew it had to be something large enough to make a bite like that, but she also felt an intense source of heat coming from the biters mouth.

Could it have been a dragon? No, couldn't be, all of the dragons left for The Hidden World…right? If it was a dragon though, then what dragon could it possibly be? Maybe she could ask Fishlegs or someone if he can identify the mark.

However, as she was slowly heading back to New Berk, feeling the intense pain of the fresh bite wound as blood was slowly seeping out, she felt something strange going on in her toes, as if something was growing.

She decides to take off her boots and socks to see what was going on and was shocked to see her toenails growing out, seeming to turn into claws of some sort, and her toes were sort of fusing together, forming what looked like to be a paw.

Of course, that wasn't the only strange thing that Astrid was feeling. Suddenly, she feels her clothes get tighter, as if she herself was growing. Her shirt ends up ripping up as her muscles were inflating, making her feel stronger than ever.

Actually, the only part of her that didn't seem to be growing were her breasts, in fact they actually seemed to be shrinking into her chest as four additional nipples appear below the original two. She also felt something poking through her shirt along her shoulder blades and right above her butt.

She feels around and manages to find three nubs that were extending from those areas. "W-what are these things?" She asks. "What's going on?"

It was right then that she noticed that she was feeling especially hot around her groin and she could feel something there that wasn't there before. Astrid rips her pants open and nearly yells out in horror upon seeing it.

She didn't quite know what to expect when she tore her pants open, but it certainly wasn't…this. What she was staring down at was two black, fleshy orbs nestled in a sac with a small nub right above the orbs that had a small, pink, fleshy object poking out.

"Oh. My. Thor." She says. "I-is this a penis? Am I becoming a boy? What the hell is going on?" True enough, as the tip of the flesh rod was starting to emerge, she could feel her pussy clenching and becoming tighter and tighter until she could no longer feel it, confirming her suspicion and making her come to terms with some new pronouns. Astrid was now a he.

Pretty soon, he had grown to be about twice his normal size and his clothes were just barely hanging on. He decided to just shed the clothes as they were becoming pretty useless at that point.

He also notices his fingernails growing out just like his toenails, developing into what appeared to be claws. The nubs on his ass and shoulder blades soon extended outward, becoming longer and longer.

The nub on his ass grew into a long tail with two fins on the end and the ones on his back grew out and developed a thin membrane surrounding the bones in what appeared to be wings. What was more was his body was now growing deep black scales that started from his fingers and toes and has soon crept up his arms.

Astrid gets on all fours to look down at a nearby puddle to see his reflection, only to find his mind seemed to tell him that this was a correct stance and the bones in his legs changed to become more suitable for a quadrupedal stance.

His rear was, however, then started to get weighed down by his growing, grapefruit sized testicles. Those balls were already pretty overgrown, Astrid had accidentally caught glimpses of Toothless's balls in the past so he knows these are definitely bigger and they were still growing.

Astrid stares into the water as his hair recedes into his head, making him completely bald, his face extends outward, his mouth widens to about as wide as his eyes, his pupils widen, his ears move up to the top of his head, his head grows six small nubs on the side, and the cherry on top was his face, along with the rest of his body, becoming covered in head to tail with the black scales.

Astrid looks down at himself, getting at every angle he could look at as he comes to the quick realization, he was now a Night Fury. A male Night Fury just like Toothless, only with blue eyes instead of green. His blue eyes were the only real part of him that he could even recognize.

Of course his mind was racing a little bit trying to figure out how all of this happened, but the majority of his mind couldn't help but feel…incredible. Astrid felt big, strong, powerful, sexy, the list went on and on.

One thing, however, is that Astrid's coconut sized balls, a bit oversized if you asked him, were so large and heavy that he was having to be conscious about keeping his rear up so they aren't dragging along the ground.

On top of that, the thrill and heat of the transformation has made Astrid hornier than ever, making his brand new, massive, 15 inch knotted cock bob and twitch in the air. He could probably suck on it without even having to strain his neck.

However, there was something else he had in mind. In order for this to work, however, he digs through his clothes and finds the necklace that he always wears, slips it onto his right ear, and walks off.

Astrid makes her way into New Berk, staying in a bush just outside a particular house with red painting. The door to the house opens, and his one legged boyfriend walked out.

Hiccup knew it was getting dark and Astrid had not returned from her walk yet and he was getting pretty worried, which is why he was currently standing outside his house. However, Hiccup hears some rustling in the bushes. He calls out, "Astrid? Is that you?"

Astrid internally chuckles as he knew that Hiccup wasn't that far off.

Hiccup then notices something leap from the bush and run off in the opposite direction of the village. Hiccup decides to walk down that way to see just what's going on.

Hiccup walks down in the direction he saw the creature walk in, hoping that if it wasn't Astrid then it was at least something that wouldn't hurt him.

Hiccup steps into the same clearing that Astrid experienced her transformation in and this time he really feels like something or someone is nearby.

Suddenly, he sees a pair of bright blue eyes open up as a black figure walks towards him. Hiccup's eyes adjust to see that the figure is a blue eyed Night Fury, which makes his eyes widen.

"Toothless? No, can't be, Toothless has green eyes. So then, who are you?" Hiccup asks.

Astrid steps forward and motions his head a little, showing Hiccup the necklace that he instantly recognized. "Astrid's necklace. What have you done with her? Where is she?"

Astrid could see that Hiccup likely wasn't going to figure it out on his own, not at this rate anyway, so he uses his claw to write something in the dirt saying, 'I AM Astrid.'

Hiccup looks to the message, then to the dragon and back a few times as he puts the pieces together. He did have to admit that those eyes did have the exact same shade as the eyes of the girl he's loved since he was a kid, so he asks, "…Astrid? I-is that you? But wait…how are you a dragon?" Astrid moves his neck up, making his bite wound shine in the moon light for Hiccup to see.

Hiccup's eyes widen upon seeing it, "You were bitten? B-by what?" Astrid hangs his head, telling Hiccup that he had no idea, making him nod. "I see. Well, I guess we should get you to Fishlegs or someone to see if we can figure out how to change you back."

Hiccup was about to walk back into the village, but Astrid steps in front of him and makes a few grunts. "Astrid, what is it? Don't you want to change back?" Astrid stares Hiccup down, hoping that he could detect the notes of joy in his eyes for being this way.

It took Hiccup a few moments to figure it out, but when he did he kneels down and cups Astrid's head with his hands. "…Astrid…do you want to stay this way?" Astrid smiles at the question making Hiccup nod. "Ok. If you enjoy being a dragon then I can't stop you."

Astrid couldn't help but hug Hiccup upon hearing this, he was over the moon with joy that he was being so accepting. Hiccup pats Astrid on the neck and says, "I will admit, you do look pretty good as a dragon, kind of makes me wish I was one as well."

Astrid locks eyes with Hiccup, as if to wordlessly ask if Hiccup would like to transform as well. Hiccup gives Astrid a kiss and says, "Make me a Night Fury."

Astrid nods and proceeds to bite Hiccup on the same spot she was bitten. She didn't want to bite hard enough to hurt him too badly or draw blood, just enough to break the skin and hopefully get the transformation going.

Hiccup grunts in pain a bit from the bite and Astrid begins to tug at his clothes, making him laugh. "Ok, ok, I get it. No need for these when I'm a dragon."

Hiccup takes off his clothes, leaving him fully naked, just in time for him to notice his good foot changing and becoming more paw-like, the same way Astrid's did when his transformation began.

However, one strange effect began when he felt something tingling in the nub where his missing leg was. He takes off the holder for the metal leg to find that a brand new leg seems to be growing, something Hiccup never in his wildest dreams thought could be possible.

Hiccup was so distracted by his growing leg that he didn't notice the other changes taking place on his body like him growing to twice his normal size, nubs on his shoulder blades and rear growing which would soon become his wings and tail, and his fingernails growing to claws as well.

As Hiccup was going along, he could start to hear Astrid's voice saying, "That's it. Just let it all happen."

His focus was then snapped back to him once he felt a strong source of heat on his chest as four additional nipples grow below the original two, but the nipples seemed to be growing outward, turning into large, fleshy, milk filled sacs that turned out to be breasts.

Hiccup could also feel heat coming from his crotch as his dick and balls shrink and slip into his groin and were replaced by some lips with a small nub sitting on top which he recognized to be a vagina, officially making Hiccup into a female.

It was then that Hiccup looked over to Astrid and saw the orbs and rod hanging from his hind legs and realized that, on top of turning into a dragon, Astrid's own gender was changed as well and he was a male now with a raging boner.

As much as Hiccup wanted to help Astrid take care of it, she really needed to focus on her own transformations as her tail grows to be long but about an inch shorter than Astrid's, her wings grow to full size, her legs change to a quadrupedal stance, her face shifts to form that of a Night Fury, and her whole body becomes covered in black scales from head to toe.

Once the transformation was complete, Hiccup looks up to Astrid and asks, "Well…how do I look?"

Astrid looks up and down the new female dragon and comments, "As beautiful as ever."

Hiccup nods and nuzzles Astrid a bit. "Thanks, Astrid. Well, guess we should head back to Berk."

Astrid shakes her head. "No, screw Berk. Let's go live our lives like the dragons we are. Free from any human traces."

Hiccup wanted to say something back, but when she looked into Astrid's eyes she knew that he was certain they, and Berk, would be alright. "Ok. We'll leave."

Astrid nods. "So, what shall we do now?"

Hiccup chuckles and replies, "Well, you're a male dragon, I'm a female dragon, we like each other a lot so…"

Astrid licks his head and says, "I thought you'd never ask."

Hiccup turns around, lifts his tail and spreads his hind legs, giving Astrid full view of her ass and brand new cunt. Astrid didn't need to be told twice to mount Hiccup and proceed to push his cock right into Hiccup's cunt.

Now, Hiccup and Astrid have had sex before, but then their genders were reversed then so having Astrid be the one to pound a cunt and Hiccup being the one to receive said cock striked a bit odd to both of them at first, but once Astrid really got going, it felt like this was something that was meant to happen.

Hiccup's gentle moans and groans were being backed up when Astrid puts his paws down to grope and squeeze Hiccup's boobs, making the pleasure in her mind go through the roof. It drove her to her first orgasm as a female in less than a minute, making her cunt coat Astrid's cock in vaginal fluid, but she was nowhere near done yet.

As Astrid pounded his cock deeper and deeper into Hiccup's cunt, his oversized balls kept on smacking Hiccup's hind legs and lower boobs, giving her the feeling of getting slapped there in the best possible way.

The heat of the transformation plus the warm tightness of Hiccup's cunt was more than enough to spike Astrid's pleasure as he pushes his knot inside and erupt cum from those massive testicles that filled up and expanded Hiccup's stomach, making her look like she just swallowed two Terrible Terrors whole.

Hiccup also experienced a second orgasm upon being filled with Astrid's hot cum, making Astrid's cock get coated in a lovely mix of her own vaginal fluids and his own cum.

Once they took a moment to let Astrid's knot soften, Astrid pulls his knot and the rest of his 15 inch cock out of Hiccup's cunt, causing the cum/vaginal fluid mixture to gush out of her cunt and pool under her hind legs.

Hiccup was now left a panting, sexual fluid coated mess as Astrid walks over and licks Hiccup on the cheek saying, "You were amazing."

Hiccup nods. "You were even more amazing. W-we should go find a place to live if we're gonna live on our own." Astrid nods and the two Furies head off, looking around the outskirts of Berk until they find a cave big enough to accommodate both of them.

Once they get inside they lie down and Hiccup gets a look of thinking on her face. "You were bitten and turned into a Night Fury, then when you bit me it turned me into a Night Fury as well…Could it be possible that it was a Night Fury that bit you in the first place?"

Astrid sighs and replies, "I've been thinking the same thing. Now, this raises two questions…"

Hiccup shakes his head and decides to answer the first question on his own. "There's no way Toothless would have done this."

"Are you sure about that, Hiccup?" A voice says and soon, another Night Fury appears from the bushes, one with a prosthetic tail fin that Hiccup recognized instantly.

"T-Toothless? Wait, you were the one that bit Astrid?" Hiccup asks.

Toothless nods. "I had to do it. You know that the Night Fury numbers are down to, well, just myself, so I needed a way to create more of us. Yes, I have Luna now and we are trying for hatchlings at the moment, but the fact is that she's a Light Fury, and in order for my species to grow I needed more pure blood Night Furies, so I thought of you guys."

Astrid stands up and asks, "Wait, but how did you biting me turn me into a Night Fury?"

Toothless replies, "Well, there's more reasons why Night Furies are so dangerous and that is that our bite has a strange power that causes non-dragon intelligent beings to turn into Night Furies. I don't know how it happens but that's just what it is."

Hiccup and Astrid exchange glances as Hiccup asks, "So, your bite can swap genders as well?"

Toothless replies, "Actually, that surprised me too. I originally bit you, Astrid, hoping that if you could become a female Night Fury then you could help me out, but then you became male and it certainly threw a wrench into my plans. But, then you bit Hiccup and you both also mated so I can rest knowing that my species is safe."

Hiccup just had to ask the question. "So…you watched us mate?"

Toothless chuckles to that. "No, I looked away for that as I knew you two probably wanted privacy." Both Hiccup and Astrid let out huge sighs of relief for that. Toothless says, "Well then, I think you two know what you need to do next."

Hiccup and Astrid exchange glances and both look back to Toothless with looks of confusion. Toothless sighs. "And here I thought you were the smarter one, Astrid. It is time for you two to come with me to The Hidden World."

Hiccup's jaw nearly hits the ground as Astrid asks, "Wait, we do have to come with you?"

Toothless nods. "As you both know, it is no longer safe for dragons to stay in your world, and you two are now dragons. I promise you both that your lives will be filled with even more happiness and peace if you do come with me."

Hiccup picks her jaw back up and asks, "But what about Berk?"

Toothless replies, "I get that you want to be here, but if these people start seeing dragons roaming around once again, then they might start to get the wrong idea and think that we can just come and go all the time, and maybe they might get the idea to start looking for it as well, and I can't have that happening. Come on, you two, you need to come to your new home."

Hiccup and Astrid look into each other's eyes, seeming to have a wordless conversation about this. They knew that he was right on all fronts, since they were dragons now, they really did need to go to The Hidden World where they'll be safe. Yes, they'd be leaving Berk behind, but they know how strong and resilient the residents are, so in the end they look to Toothless and give him a nod.

Toothless nods back. "Alright. We'll leave now. Just hope you two can figure out how to fly quick enough."

It took a minute or two of adjusting, but Hiccup and Astrid did manage to figure out flying pretty quickly and were able to follow Toothless on their way to their new home.

(4 months later)

As soon as Hiccup and Astrid arrived in The Hidden World, they were instantly welcomed by all the dragon residents, as they absolutely adore Night Furies.

Astrid quickly found Stormfly and even though Astrid was now male, Stormfly knew her rider like the back of her wing and they instantly reconnected.

As for Hiccup, she mostly stayed at her and Astrid's den, relaxing and making sure the eggs inside her were safe as possible and had the best chance to grow and develop. Her stomach had bloated even more than when Astrid filled her up with cum to begin with, as there were 3 eggs in there. Her breasts had also grown quite a bit, becoming the size of grapefruits and full of milk for the hatchlings to come.

With Astrid's massive genital size, he is almost always horny whenever he is home, but of course Hiccup is always happy to lend her mouth or butt whenever Astrid is in the need, and the two Furies were fully settled into their new life, feeling closer and happier than they had ever felt as humans.

Thank you for reading this story, I hope you enjoyed it.

I originally just wanted to do the transformations for Hiccup and Astrid but kind of decided to add Toothless in in the last minute just to add some more depth to the story.

Anyway, take care, stay safe and I'll see you next time!