So, this is an idea that just popped into my head... literally typed it up within 20min lol. I was recently re-watching rtte season 6. In the final episodes, I'm pretty sure Hiccup was having a really hard time with his dad, Johan, and Krogan... So this is my take on what happened on one of those nights in between episode 12 and 13.

Astrid awoke to a crash outside her hut. She jolted upright in an instant, her knives that she kept under her pillow drawn. She slowly crept out of bed, slipped on her boots, and slinked out of her hut into the cool night air. She had a feeling she knew where the sound came from. The dim light seeping through Hiccup's hut confirmed her suspicions. She tip-toed down the ramp to Hiccup's hut, wondering why in the world he was still up at this hour. He should be sleeping... Astrid thought, slightly annoyed. Another crash, this one followed by a frustrated shout and concerned coos. Astrid picked up a jog now. She stopped before the door, then slowly creaked it open. Crates and papers with what looked like Dragon Eye notes were strewn about the floor. Hiccup was hunched over his desk in the far corner, a single lit candle placed there, illuminating the room in a soft orange glow. She stood there for a moment, taking in his stance. His shoulders were tense, his back stiff, and his hands, which were pressed against the table, were balled into fists. Astrid stepped forward slowly, resting a gentle hand on his tight shoulder once she reached him. He stiffened under her touch, but didn't respond in any other way.

"Hiccup?" she asked softly and hesitantly. He just stood there, staring at the papers laying on the desk in front of him with fierce intensity. "Hey," she said, giving his shoulder little shake. "Hiccup? Are you okay?" He suddenly stood up straight, his movements quick and rigid. He shook his head, and his breathing started to increase, but he never once took his eyes off of the papers. "Hiccup! Hey, hey, calm down," Astrid tried to sooth, her mind racing as to try and find what could be wrong with him, and what could cause him to act so distraught. Hiccup's forehead started to sweat, the small droplets reflecting the candle light. Astrid recoiled her hand when he started to shiver, like a fever had suddenly took hold of him. "Hiccup, wha-" She was cut off by him turning abruptly, starting to pace. She looked at Toothless for answers, shaking her head in bewilderment. However, he just looked at her with sad and confused eyes. Astrid sighed before walking forward and grabbing both of Hiccup's shoulders, trying to get him to look at her. But he kept his head ducked, mumbling things to herself. She could catch a couple words such as "dad" "Johan" and "dragon." Frustrated, Astrid let go of Hiccup's shoulder, instead gripping his chin and forcing him to look at her. She gasped in shock when she saw his eyes. His forest green irises were bright with fear and his eyes slightly damp, red, and puffy. "Hiccup," she gasped, "what's wrong?" She brought her hand from his chin up to his cheek, her thumb rubbing the tears from his face. He jerked his face away quickly however, walking over to Toothless, who had his head cocked in question and was cooing in worry. Hiccup leaned against his dragon, sinking down to the floor and wrapping his arms around his knees, drawing them to his chest. Toothless let out a small gurgle as he wrapped his tail around Hiccup, his head going rest near Hiccup's legs. Astrid sunk to the ground beside him, still completely befuddled as to what could cause him to act this way. He obviously wasn't going to answer her, so she did the only other thing she could think of. Astrid wrapped her arm around his shoulder, the other going to rest on his chest. She nestled her head in the crook of his neck. He clung to her fiercely, but she didn't mind. She let him take whatever comfort he needed from the embrace. His breath was coming in short, shuddered huffs, and his whole body quivered. After almost ten minutes, Astrid couldn't contain her curiosity or concern any longer. Entangling herself from his arms, she once again grabbed his shoulders, but this time he looked up at her on his own accord. Tears now streamed freely down his face. This was the first time Astrid had ever seen him cry, and she hated it. She hated seeing him so broken. "Hiccup, you need to tell me what's wrong," she stated importantly. He opened and closed his mouth, and a stammered gurgle was all that he could produce. He closed his eyes then, and took in a deep breath, seeming to try and steady himself. He sniffed, then opened his eyes. They were focused and alert now, and Astrid let a little smile of relief cross her features. His eyes widened in alarm when he saw her, almost like he never really knew she was there.

"I-I, uh," he stuttered, hurriedly wiping the tears from his face.

"Hey, hey, hey, it's okay, Hiccup," Astrid reassured quickly, "Can you tell me what's wrong?"

"I-I'm fine. Really. Y-you can go now." And with that, he stood, dragging her with him, and started leading him out the door.

"Woah, woah, woah, hold up." She ripped her arm from his grasp. "I don't think you're fine, Hiccup." She gripped his arm this time, leading him back to his desk and plopping him down in the chair, despite his many protests. "Now, do you mind telling me what just happened there? What was that? I've never seen you like that before." Her voice softened at that last sentence.

Hiccup shifted uneasily. "I really don't want to talk about it."

"Well, you're not leaving that chair until you do, so I suggest you start talking."

He looked at Astrid with an exasperated look, before sighing heavily and speaking; "I-it's just-" he stopped abruptly, then his shoulders sank in defeat and he let all of his emotions spill. "W-with these flyers and Krogan and Johan and Viggo's dead a-and now dad..." his voice faltered and dropped as he said the last bit. "If Johan finds the King of Dragons, he could wipe out the entire dragon race, but-but how can I go off on this-this crazy mission and leave my dad? He would never leave me if our roles were reversed. I mean, he-he-argh!" Hiccup pounded his fists on the table in a fit of frustration, while Astrid's heart broke at the sight. She should have known he was struggling. But he had done such a good job at hiding it...

"What if he were to-" Hiccup started again, "You-you know! And I wasn't there... I-I just, four years isn't enough to make up for a lifetime of our wasted time! If I lost him, I don't know what I'd do," his voice started to quiver, "And there's the chance I could lose Toothless too? I have to have the most thought out plan, the most strategic, the most intelligent. I have to outsmart both Krogan and Johan, who have both had a lifetime of experience! I'm only 19! I shouldn't have to be in charge of all this," he gestured vaguely to the area around him, "Not alone! I-I-I need him. I need dad... If there's any flaw, as small as it is, someone could die, Astrid. You could die. I can't do this alone..."

Astrid stood there for a moment, in shock with Hiccup's sudden outburst. Her mind mulled over what to say-how she could possibly comfort him. Choosing her next words carefully, she said, "You're not alone, Hiccup. You have the Berk council, the gang, and me. You don't-won't- have to do this alone. We're all here for you, Hiccup. As for your dad... I can't promise everything is going to go right. I just can't, because I don't know if everything is going to be all right. But no matter what happens to your dad, we're all here for you. Whatever you need, we'll get it. And whatever happens, happens. You can't change the future, Hiccup. Just do me a favor; if you're going to have a panic attack, and you do find yourself worrying about the future, come to me, or Fishlegs. I don't want you all alone like this again." She kneeled down in front of him and grabbed his hand in hers. Hiccup closed his eyes and nodded his head, letting out a shuddered sigh. "Alright. Now, sleep."

"I-I can't do that, Astrid. I have to stay up, looking over the plan, trying to figure out more about this King of Dragons-"

"You can do that tomorrow. You need rest. You can't plan correctly in this state, Hiccup." She snatched his arm and dragged him to the bed before pushing him into the bed. Hiccup rolled his eyes, but obliged and laid down, letting out another sigh. "Good. I'll be back in the morning to make sure you've slept." She quickly pecked his lips, then moved to leave. Looking over her shoulder she said, "Good night, babe."

And for the first time that night, Hiccup smiled. "Good night."

Alright! There we have it! As always, thank you and please leave a review! (: If you have a request plz leave it in the comments or PM me!