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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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)

Introducing the World of Leifthasir

By H.F. Day

Let’s flash back to 2002. A little girl sits on a friend’s sofa, watching a movie she hadn’t even cared about seeing. Then, a voice, ethereal, haunting, and unmistakably Cate Blanchett, delivers an opening monologue that would reshape pop culture for the next decade. I was that little girl. And …

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The Burning of Gullveig

By H.F. Day

Excerpt from “The Usurper Queen Book IV: The Crown of Salt and Smoke” “Then let me see what happens to the ones who stood where I stand,” she said. “Let me see where they burned, and why they rose.” His eyes flicked, quick and bright as a fish turning in …

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