N/a:

(You can totally skip this part :v)

You know, this was meant to be a one shot for my series of Heathstrid Lemon Fanfics (no spam), but somehow it ended up like this :v so when I realized it was good, I tried to turn it into an original independent story of my own, but Astrid and Heater kept there jumping on my brain so this is what came out of it :v

Guess you already guessed it but characters are a little OC :v

I'm not planning to continue this like ever (at least not in this fandom, maybe in Vocaloid or Miraculous Ladybug), so don't waste your time if you're looking for an compete story :v

Prelude

"Ma'am, we have bad news!"

The girl frowned and clenched her fist.

I swear if this is about that whore…

"Eight ships were destroyed for Berserkers in Black Heart Bay".

"Son of a…!"

That was Astrid Hofferson, daughter of House Hofferson from the Hooligan Tribe, also known as the most valuable, murderous and fearless shield maiden the Barbaric Archipelago had ever seen. She was the general of the Berkian tribes, wife of Hiccup Horrendous Haddock the Third, Chief of the Hooligan Tribe and leader of the Berkian Tribe an alliance made of the Murderous tribe, the Meathead tribe and, of course, the Hooligan tribe. Under his command, theirs had became the most powerful and feared of all Viking alliances.

But there was a tribe which was known for owning the craziest, toughest, wildest and most dangerous warriors in the whole Archipelago: the Berserkers, three times the alliance had tried get them, three times they had lost, fought and got half of their soldiers murdered, just for nothing.

The last invasion had been in Astrid's hands. And it was the closest they had been of taking Berserker Island, she got to kill the chief and the heir and the island would've been theirs if it weren't for that bitch...

One year ago. Third Berkian invasion in Berserker Island.

"Jorgensons! To the back! Now!" roared an eighteen years old Astrid Hofferson in the middle of the rain of arrows.

The battle was brutal, fierce and bloody. Hundreds of Berkians fighting against all the tribe in the Berserker Islands. Berserkers were all formidable warriors crazy enough to be fearless and feared but also sane enough to know how to survive in all adversities.

"You heard the lady! Brothers, join my father in the back line! Amateurs, come with me! Backup is coming! Snotlout, Snotlout, oi, oi, oi!" bellowed Snotlout Jorgenson leading the powerful and dangerous hordes of his family to the last line of the battlefield.

Astrid smiled as she decapitated some unimportant Berserker warrior. Victory was theirs.

Hers, to be fair. That victory was entirely hers, her betrothal gift for her fiancé.

"Thorstons! Stop the catapults! I won't give Hiccup a village in ruins!"

She smiled. He had been longing for the Berserker islands since they were teens.

"Valka just captured Chief Oswald, Astrid!" shouted Fishlegs Ingerman.

"Yes!" she smiled fiercely " Don't kill him, I want Stoick and Hiccup to watch me kill him myself."

Not far away from them, Dagur the Deranged, son if the chief Oswald the Antagonistic of the Berserker tribe, saw his father captured and immediately took the leadership.

"Don't get down, Berserkers! We'll get back my father and you still have me! Defend the island!"

But even though Dagur was trying to raise his people's spirit, it was clear who the battle was falling in favor for. Berkians could already taste the victory.

Aware of what the situation could end up like, Dagur headed back to his father's hut. Inside, a black haired young lady was waiting holding her axe anxiously.

"Dagur! What's going on? Is father alright? What about our people? Let me go! I wanna fight!" she pleaded.

"Not this time, Heather. Berkians are a serious matter."

That infuriated her.

"I'm old enough to take care of myself in battle!"

"Heather! If I don't survive, Berserk only has you! Don't be so stubborn." he sighed "Now, you have to go. Savage is gonna take you to a safe place".

Her eyes widened in panic.

"What? Are you sending me away? No, Dagur! I'm staying!".

"Fuck, Heather! Understand! We can't lose you like we lost mom!" He caressed her cheek "You are our toughest warrior, our…"

"Deadliest weapon and most precious jewel, yes, I know!" She exclaimed "You tell me that everyday!"

Heather was the best guarded secret of the Berserker tribe, the daughter of the chief. Both father and son had protected her with their lives since she was born and her mother, Termagant, died. When she was three, some tribe tried to kidnap her, so her father decided to let other tribes believe she was killed by her captors and ordered all the tribe to protect the secret. Many times she had been allowed to fight side to side with the tribe, but that special time, it was just too dangerous.

"Fine! Just stay here!"

Dagur left the hut and joined his people.

"Keep fighting, Berserkers! For Oswald!"

"For Oswald!" repeated the warriors fighting even more ferocious than before.

Ruffnut Thorston clenched her teeth.

"We're not taking anybody down, Astrid! We have to kill that man before they take us down!"

Astrid let out a scream of frustration.

"I guess there's no other way! Berserkers! You want your chief back?!" She lifted her axe and let it fall on the chief's neck "Here you have him!" And held the severed head.

"NO!" screamed Dagur "Father! Don't hesitate Berserkers! Berkians will die today!"

Killing Oswald in the battlefield wasn't part of the plan, but killing Dagur was.

"I want every house to send their best three warriors against Dagur" ordered her to Fishlegs Ingerman, who ran to tell the chiefs.

There was no chance he could survive that. While Dagur was being killed, Astrid walked through the battlefield.

"Your chief and his son have been both killed!" bellowed Snotlout "Surrender, Berserkers and we may show you some mercy!"

The shieldmaiden smiled watching the Jorgenson holding the head of Dagur's.

"Oh my god!" cried a girl inside some hut.

For Dagur. For father.

"Ma'am, wait! You're not supposed to do this now!"

"Silence, Savage! This is my tribe!"

The tall man who was trying to stop her of climbing to the roof, nodded.

"Make your family proud in Valhalla, child".

Up in the roof, Heather raised her axe and cried, tears rolling down her cheeks.

"Don't go back Berserkers! It's not over yet!" she yelled.

In the ground, Astrid frowned.

"Who the hell is that?!"

"We're Berserkers! We die fighting! For Oswald! For Dagur! Victory or Valhalla!" and jumped to join the her people in the crowd.

"Victory or Valhalla!" echoed the Berserkers.

Wielding her sword, Astrid turned to see Valka.

"Berserker doesn't belong to any berkian!" encouraged Heather her people.

Valka frowned to her soon to be daughter in law.

What the hell was going on? Who was that? Why were Berserkers following her?

Suddenly, Valka gasped.

"Oh Thor. I think she's Oswald's daughter!"

What?

"What? Since when Oswald had a daughter?"

"She was born a twenty years ago, but was kidnapped three years after her birth".

Astrid frowned.

"She does have spirit. But something tells me that girl was never actually kidnapped."

The battle was, for the third time again, in vain. Berserker kept free and they had a new leader: Heather the Unhinged, daughter of Oswald the Antagonistic and sister of Dagur the Deranged, chieftess of Berserker Tribe.

Victory or Valhalla. It was victory for the Berserkers but not Valhalla for Berkians.

Killing Oswald and Dagur was a great plan since without them Berserkers would be totally lost with no leader, but then the dark haired girl came to ruined everything.

Who's she?

Present day.

Since that battle, Heather had leaded the Berserkers to keep attacking Berkians by little things but causing a lot of trouble. By doing so, she was becoming one of the bravest and smartest chieftess in the Viking world. Astrid and she had fought face to face many times, Heather was pretty aware of that Astrid was the one who had her father and brother killed, so they hated each other to death.

"Ma'am, also… one of the drakkars that were attracted was… the Night Fury."

In a heartbeat, the world stopped. The Night Fury was Hiccup's drakkar.

"And where is he?" she asked impassively.

"We haven't found his… him".

Astrid breathed heavily.

He's somewhere safe and sound. She wouldn't dare to hurt him.

"I'm telling you because… well, since he's missing, and you're his wife, you…"

"I know. The council has called me to a meeting, right?"

The man nodded. Until Hiccup was found, she was acting chief.

_._._._

An eye for an eye. A tooth for a tooth.

"It's ready, chieftess".

Heather smiled.

"Good. Now, send our gift. Astrid Hofferson is gonna paid what she did to me, to our tribe."

So the next morning, the former chief's corpse was left in front of the gates of the Castle, a gift for Astrid, the new chief and leader of the Berkian alliance.

Crying over her husband's dead body, Astrid Hofferson swore to the gods that Heather Berserker would pay.

"This is war"