H.F. Day — Norse Mythology & Viking Dark Fantasy Author

Welcome to Leifthasir

The gods have abandoned the world. Their magic lingers only in whispers, in shattered ruins, and in the lost sword of Freyr. Find out more in the Viking Dark Fantasy series "Leifthasir's Saga"

Sideways dragon in norse style

New & Upcoming Books

A Tale of Scorched Ash & Elm

Release date December 2, 2025

The Sea & The Stag Horn

Release date March 3, 2026

Inheritance of Fire

March, 2027

Latest Releases

Child of Ash Heir of Fire

A Viking princess is supposed to give her father a grandson—not become the warrior his men would follow into battle.

Her husband resents the life marrying her cost him. Her best friend is becoming her political enemy. Her kingdom's ancestral enemies are invading. And when she finally goes to war, her husband starts dreaming of her as a Valkyrie queen.

Everyone wanted Indunna to give them the next king. They should have been more worried she might become one.

Viking Dark Fantasy Novel

The World of Leifthasir

Leifthasir is a land of myth and magic, shaped by the remnants of divine influence and mortal struggles. Inspired by Scandinavian and Viking cultures, it is a world where gods once walked among men and elves, leaving relics of their power, some revered, some fought over, and some forgotten.

Leifthasir’s history is woven with Norse mythology, centered around the creation of the world from Ymir’s remains and the influence of gods like Freyr and Freya. The elves of Alfheim, once blessed with long life and magic known as Seidr, lived in harmony under Freyr’s guidance. However, when the gods departed for Asgard, the world began to decay, its magic waning, its creatures dwindling, and its lands falling into chaos.

One of the last divine relics left behind was Sumarbrander, a sword imbued with Vanir magic entrusted to the elves. This weapon, both a gift and a burden, became a coveted artifact that ultimately led to Alfheim's downfall.

Looking for more Viking Dark Fantasy and Norse Mythology?

Sideways dragon in norse style
Indie Author H.F. Day holding a teacup

Meet H.F. Day

H.F. Day is an author and illustrator of myth-rich fantasy grounded in the Viking Age. Her debut novel, A Tale of Scorched Ash and Elm, braids the intimacy of family drama with the sweep of legend, drawing closely from the Eddas and Sagas. A lifelong student of Norse history and material culture, H.F. Day cares about getting the small things right; ships and seasonal light, law and longhouses, so the big things feel true. She has traveled widely and credits her inspiration to favorite locations such as Ireland, Spain, Romania, and the Rockies for shaping her eye.

Sumarbrander by indie author H.F. Day

Leifthasir

Learn more about the world of Leifthasir and the research involved in its creation.

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The Characters

Meet the Cast of A Tale of Scorched Ash & Elm, H.F. Day's debut novel.

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The Art

View concept artwork for the novel and the world of Leifthasir.

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Join the ARC Team

Sign up today to become an ARC reader for H.F. Day's upcoming releases.

Dragon with sumarbrander by indie author H.F. Day
Cover for the viking dark fantasy novel child of Ash heir of fire by H.F. Day, features a dark blue background with a woman in shadow standing in flame with viking knot work on either side.

Reviews

What is Viking Dark Fantasy?

Viking dark fantasy blends the gritty reality of historically based fantasy with the rich tapestry of Norse Mythology and the Sagas. The World of Leifthasir is built on research and language deep dives into the world that Viking raiders inhabited in the 10th century and before. There are even little easter eggs for those who love historical sagas in most of the books.

My thoughts on Viking Dark Fantasy & Norse Mythology (plus updates)

Child of Ash Heir of Fire Pre-Order Bundle

By H.F. Day

The Pre-Order Bundle for Child of Ash, Heir of Fire Is Here Child of Ash, Heir of Fire hits shelves on September 15, and pre-orders for the full bundle are open right now. I wanted to put together something worth committing to before the book even exists in your hands …

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Why I Put Horse Sacrifice in Almost Every Book

By H.F. Day

If you’ve read A Tale of Scorched Ash and Elm, or been a part of the ARC team for Child of Ash Heir of Fire, you’ve noticed a pattern. Midwinter arrives, the fire gets built, and at some point a horse bites the dust. When someone asks about this, they …

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Days of the Week: Were They Named After Norse Gods?

By H.F. Day

Were the Days of the Week Really Named After Norse Gods? (It’s More Complicated Than That) Here’s a piece of Norse mythology trivia that circulates constantly online, in classrooms, and in the kind of books you find in the mythology section of a large chain bookstore: Tuesday is named after …

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Norse God Freyr: Who He Really Was

By H.F. Day

And Why Pop Culture Gets Him Wrong The Norse God Freyr is one of the most important gods in the Norse pantheon. He is also one of the most consistently ignored, misrepresented, and flattened by modern pop culture, and that bothers me more than I can reasonably explain in a …

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What You Think Is Norse Mythology Probably Isn’t

By H.F. Day

A Viking Dark Fantasy Author Explains Here’s a question I get asked a lot: how do you research Norse Mythology for a Viking dark fantasy series? The short answer is: very carefully, and with a deep suspicion of whatever you thought you already knew. Because here’s the thing nobody tells …

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Norway vs. England: The Real Rivalry Behind My Viking Fantasy World

By H.F. Day

Will you be watching Norway take on England this Saturday? I will be, and not just for the football. (It’ll be the dark viking fantasy vibes for sure!) The moment I saw this matchup on the schedule, I couldn’t help but grin. Because as many fans and historians have already …

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Introducing Sigurn & Folke

By H.F. Day

Excerpt from Child of Ash Heir of Fire, available on September 14 Sigurn wasn’t sure why she had even come.  Leif played his game. Folke played his. And she? She was decoration. A distraction to keep the captain entertained until his judgment blurred enough to fall into the Chancellor’s hands. …

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What Is a Völva? Norse Mythology’s Seeress, And How She’s Reimagined in the World of Leifthasir

By H.F. Day

If you’ve picked up a Norse-inspired fantasy novel recently, you’ve probably encountered her: the woman who stands at the edge of firelight, staff in hand, eyes somewhere else entirely. She speaks in riddles. She knows too much. She makes the warriors uncomfortable in a way that no sword can. She …

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Elves in Norse Myth vs. Elves in Leifthasir

By H.F. Day

Elves in Norse Myth vs. Leifthasir: Álfar, Dark Elves, Seidr, and Viking Fantasy Worldbuilding Norse elves were not tiny fairies or Tolkien-style forest immortals. They were shining, powerful, ambiguous beings tied to gods, ancestors, fertility, death, and the land. In Leifthasir, those mythic roots become a living people shaped by …

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Were There Shield Maidens? The Truth About Women Warriors in the Viking Age.

By H.F. Day

The Viking Age gives us a complicated picture of women warriors: legendary shield-maidens, rare archaeological evidence, and legal systems that discouraged women from taking up masculine roles. In Leifthasir, that tension becomes the foundation for a fantasy world where women can fight—but never without consequence. Were There Women Warriors in …

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