The Master of Ragnarok & Blesser of Einherjar

百錬の覇王と聖約の戦乙女〈ヴァルキュリア〉 (Hyakuren no Haou to Seiyaku no Valkyria)

5.7(99,130)

MAL Score

Ranked #12684

Popularity #1327

Action
Adventure
Fantasy
Isekai
Romance
Harem
Military

Episodes: 12
Duration: 23 min per ep
Aired: Jul 8, 2018 to Sep 23, 2018
Status: Finished Airing

Synopsis

Yuuto Suou learns the hard way that some urban legends aren’t meant to be tested. After tagging along with his childhood friend Mitsuki Shimoya to try one out, he snaps a photo of himself with a shrine’s divine mirror—only to be suddenly transported to another world shaped by the lore of Norse myth.

Armed with what he remembers from school and a solar-powered smartphone, Yuuto finds a place among the Wolf Clan who take him in. As he works to raise their standing, he also draws the devotion of the Einherjar, a group of warrior maidens who wield magic and rally to his side.

Otaku Consensus

The Master of Ragnarok & Blesser of Einherjar earns its narrow appeal through brisk one-cour pacing and an unusually explicit fusion of harem wish fulfillment, military conquest, Norse-flavored mythology, and anachronistic problem-solving. The critical verdict is harsh: reviewers consistently cite generic characterization, dull action staging, thin visuals, and an adaptation that executes familiar isekai tropes with little imagination, reflected in its low MAL and AniList scores despite solid visibility.

Why You Should Watch

Watch it if you specifically want a compact, unapologetic military-harem isekai where the attraction is less emotional nuance and more seeing modern knowledge dropped into a mythic clan-war setting. It scratches the same broad power-fantasy itch as strategy-driven isekai, but without the denser political machinery of something like How a Realist Hero Rebuilt the Kingdom or the game-theory flamboyance associated with No Game No Life. The appeal is highly targeted: anachronistic tactics, warrior-maiden devotion, quick escalation, and light fan-service in a 12-episode package. If you prefer restrained harems, polished battle choreography, or characters who resist archetype, this is the wrong battlefield; if you enjoy messy 2010s isekai excess as a genre artifact, it is instructive viewing.

Key Characters

Y
Yuuto Suou
Yuuto is discussed less as a nuanced emotional lead than as the series' strategy engine, with his school knowledge and smartphone turning him into a textbook 2010s isekai power-fantasy protagonist.
M
Mitsuki Shimoya
Mitsuki serves as the modern-world tether for the story, giving the conquest-heavy fantasy framework a romance anchor and a point of contrast outside the clan hierarchy.

What Makes It Stand Out

1
EMT Squared produced the anime as a 12-episode summer 2018 TV run, which gives the adaptation a compressed campaign feel rather than the slower build expected from military fantasy.
2
AniList's tag profile is unusually direct about the show's formula: Isekai at 99%, Female Harem at 86%, War at 82%, Military at 76%, and Anachronism at 70%.
3
The production credits separate character design, prop design, art direction, art design, color design, and photography, with Mariko Itou adapting Yukisan's original character designs and Junichi Kitamura credited specifically for props.
4
Its reception profile is stark: a 5.68/10 MAL score from 98,763 votes and a 53/100 AniList score, yet enough curiosity to sit at MAL popularity #1318.
5
The series' Norse vocabulary and Einherjar framing place mythology in the service of harem and military genre mechanics rather than treating it as a strict mythological retelling.

Fun Facts & Trivia

Fun fact 1: The anime aired from July 8, 2018 to September 23, 2018, placing its entire run inside the Summer 2018 season.
Fun fact 2: Seiichi Takayama is credited for the original story, while Yukisan is credited for the original character designs, with Mariko Itou handling the anime character designs.
Fun fact 3: Natsuko Takahashi handled series composition, meaning the overall episode structure and adaptation flow were centralized under a veteran series-composition role rather than divided only by individual episode writers.
Fun fact 4: The visual world-building pipeline lists Akiko Kikuchi as Art Director, Hisae Arimoto for Art Design, Mika Iwami for Color Design, and Junya Kodama as Director of Photography.
Fun fact 5: Web criticism around the show is unusually consistent: multiple reviews single out poor execution of isekai tropes, generic characters, lackluster action, and weak visuals rather than one isolated production flaw.