Hello! I'm so happy to be writing this! This is the second part of my Frozen 2/How to Train Your Dragon crossover. I highly suggest reading the first part, called The Snow Queen and the Dragon Rider, which is a fairly epic Hiccup (a.k.a. Hiksti)+Elsa love story.

For anyone who enjoyed SQ&DR, this is for you! And me, because I'm writing this story because I want to read it!

I will try to respond to all reviews of each chapter in the footnotes of the following chapters, if the reviews are left before I post again. :) I hope that makes sense! Reviews are liiiiiiiiiife and they keep me motivated to write more, faster! Please take a moment and drop a review for any story you read and enjoy, it's literally the only payment I can possibly receive for this story.

So, on with the story! Yay!

-Fluffy

Birgit of Arendelle was born on August 27th, 1844. She weighed 3.5 kilograms and was 50 centimeters long. She had a full head of wispy blonde hair and baby-blue eyes. From the very start she regarded the world with a wide-eyed seriousness, and the moment her mother and father and aunt and uncle and sort-of-cousin laid eyes on her, they were all lost to their consuming love for her.

"She's the most beautiful little baby I've ever seen," Olaf said, cooing over her gently and reaching for her fist with his hand. "Look at you, you're so cute, yes you are! You are my most favorite cousin in the whole entire world!"

Anna was tired and triumphant, but it was several hours after the birth and she'd had time to clean up and nap and she and Kristoff had had time to bond a bit with their daughter before letting everyone else in. She cradled her newborn in her arms and leaned her head against her husband's shoulder. There was a serene smile on her face that Elsa had never seen before. She was glued to Anna's other side, and what with Olaf practically in Anna's lap the bed was getting a bit crowded. Hiksti was leaning over her with his hand on the headboard, craning his neck to get a look at his newest family member.

"She looks strong," he said. "And I like the name. Birgit."

"What's it mean?" Olaf asked.

Kristoff grazed a gentle finger along Birgit's cheek. "It means strong and powerful."

"Perfect," Elsa declared. "Just like her mother."

"How was the birth?" Hiksti asked curiously.

"It was perfect," Kristoff answered. "Anna was a real trooper. She was amazing! I have never been so terrified and proud in my entire life."

Elsa and Anna giggled. "It was fine," Anna said. "Not nearly as scary as I thought it would be."

"Didn't it hurt?" Elsa asked.

"Well, duh," Anna snorted. "But look at this face," she said, peering down at her daughter. "I'd do it all over again tomorrow, if I had to."

"Aww," Elsa crooned.

Then Anna lightly back-handed Elsa's arm. "When are you and Hiksti going to give her a cousin?" she asked.

"Um, I am right here," Olaf deadpanned, raising his hand in the air.

Elsa wrapper her arms around her creation. "I think she means a human cousin."

"Oh, riiiiight," Olaf said. He looked up at his maker. "When are you and Hiksti going to have a baby?"

Elsa glanced up at Hiksti, who'd raised his eyebrows. It seemed that he was waiting for her to answer. "Well… when we're ready."

"And when will that be?" Anna asked curiously.

Elsa shrugged. "When we've done everything else that we wanted to do."

"That is frustratingly vague," Kristoff said. "And how do you two even manage to not get pregnant, anyway? It seems like it's a roll of the dice every time."

Elsa blushed and Anna grimaced at her husband and Olaf tilted his head, not understanding the question.

"There… are ways," Hiksti said quickly.

"Every time what?" Olaf asked.

"Nothing," Elsa said shortly. "Don't worry about it. It's married grown-up stuff."

"Oh," Olaf said. "I'm not either of those things."

Anna shot daggers from her eyes at her husband, and he gave an apologetic grimace to all of the adults in the room. "So," she said, eager to change the subject. "What kind of other things are you wanting to do, before finally starting your family?"

"Oh, tons," Hiksti said. "Travel around. See stuff. Build stuff."

"Exactly," Elsa agreed. "Travel."

"Where… would you go?" Anna asked curiously, her bright blue eyes darting from her sister to her brother-in-law and back again.

"I hear Paris is nice," Hiksti offered. "It's been a few hundred years since I've visited, but I hear it's nice, now."

"And I'd like to visit Corona," Elsa offered. "It's been ages since we visited with Rapunzel and Aunt Arianna."

"Not since your coronation, I think," Anna offered.

"And… we'd like to do that soon," Elsa said quietly. "We were only waiting for this little one to be born."

"What?" Anna asked, sitting up and wincing. "But… but… she was just born! Can't you wait like a year or two?"

Hiksti gave his sister-in-law a sympathetic look, but backed up his wife. "We'll be back before you know it," he promised. "We'll bring souvenirs."

Anna pouted, but then Birgit fussed and her entire focus shifted to her newborn, and so did Kristoff's. As it happened, the baby needed a new nappy. Luckily for everyone in the room, they were royalty, and had people to take care of things like nappy changes, so Anna handed off the baby to a nanny and turned back to her sister. "It had better be a really nice souvenir," she said.

"Oh, I promise it'll be unique," Elsa vowed.

Two days later Elsa and Hiksti stood hand in hand at the entrance to Ahtohallan. "I have something to show you," she said, tugging him gently into the frozen river.

"Does it involve removing all of our clothes?" he asked cheekily. "Because frostbite is not on my current to-do list."

She pulled him into an embrace and kissed him. "Husband, you know I'd keep you warm. But no. This is something else."

"What?" he asked, following her deeper under the ice.

"You know that book you gave me?"

"Yeah." He'd written her a book about dragons.

"Well, I've read it a few times."

"I noticed." His voice was warm and proud.

"And I've been looking for something for a long, long time, and I've finally found it."

"I'm intrigued," he admitted.

She smiled at him and after several minutes they emerged into the large dome of ice where she could pull forth memories. "Look," she said. Then she twirled and raised her hands, and images sprang to life on the walls.

Dragons. Everywhere dragons flew and nested and bickered and hunted. Dragons of every conceivable type doing every conceivable activity that dragons were wont to do.

Hiksti turned in place on the black ice of the floor, craning his neck to try and look everywhere all at once. Then he noticed something that grabbed his attention.

"A Night Light," he breathed. "No… dozens of them! Maybe hundreds!"

Indeed, an enormous flock of piebald black-and-white dragons gamboled about in a meadow. There were newly-hatched babies, adolescents, adults, and ancient ones - all of them had some sort of mix of black and white coloring, from almost pure white to almost pure black and everywhere in-between.

"There weren't that many when I left," Hiksti said. "Only about thirty." He spun to face his wife. "Where is this, Elsa? Where?" Hope was bright in his peridot eyes, his face was alive with happiness.

Elsa brought her hands to her mouth and briefly laugh-cried. "I'll show you," she said. "Look." She gestured again, and the image spun dizzyingly, until it focused again on a large stone door set into a mountain. "This isn't just any door," she told him.

"What do you mean?"

"This is a magic portal," she told him. "For a few hundred years this woman has been coming and going through it, visiting with the dragons on occasion. And… I know who she is, and why she's stopped her visits, and why she was the only one who was able to go through."

"Wait, wait, wait," Hiksti said, patting the air with his hands. "A magic portal? Is this place - this dragon utopia, is it on Earth?"

Elsa shook her head. "No," she answered. "There are three moons in the sky."

All of the air left him and he looked up to the image of the door. "No wonder I couldn't find them," he murmured. "Are they safe, there?"

Elsa nodded. "No humans as I could see," she said. "Although, there is a palace with nine towers."

"How did you find this?"

"Well… I just followed them, for generations, over hundreds of years. It took a long time until I watched them migrate through this door from the Hidden World. Which, by the way, was flooding by the time they left."

"Yeah, I always wondered about that," Hiksti comment with a shrug. "How did the portal come to be?"

"A very powerful wizard created it," she said. "His name was Myrddin, he was English, and he had a soft spot for dragons. For a long time he simply hid the entrance to the Hidden World, and when it started to flood he created that doorway and evacuated them."

"Wait, King Arthur's wizard? From Camelot? How long ago are we talking?" Hiksti asked curiously.

"About... Fourteen hundred years ago?" Elsa estimated. "Give or take."

Hiksti propped his hands on his hips and shook his head. "I was in India by then. What did Myrddin call this new dragon world?" he asked, gesturing to the door.

"Avalon."

"Of course." Hiksti smiled brightly, his gaze fixed on the door. "And where is it, this door?"

"It's in my cousin's kingdom," she said. "In Corona."

He dropped his gaze to hers, and then stepped closer to her and picked up her hands in his own. "Elsa, my love… who is the woman?"

"She was… one of Myrddin's descendants. Many, many generations removed. She was born over 400 years ago, and only died a few years ago. She was a witch, of a sort, and it was this power that allowed her to use the door. Without magic, the door can't even be seen."

"So… we really are going to visit your cousin."

Elsa grinned. "Yes," she said.

"And then… we're going to find this door?"

"Absolutely," she told him.

He rested his forehead against hers and they closed their eyes. "And then we'll walk through it and find the dragons again."

"We will," she promised.

He squeezed her hands and sighed happily. "Have I told you today how much I love you?"

"Only twice," she murmured.

"Let's get out of here so I can properly demonstrate my adoration," he suggested.

And then laughing, they ran hand-in-hand back toward the sun.