LEVIATHAN
STATUS
COMPLETE
EPISODES
12
RELEASE
July 10, 2025
LENGTH
25 min
DESCRIPTION
Set in a war-torn reimagining of 1914, Leviathan follows Alek, a fugitive prince of the Austro-Hungarian Empire, and Deryn Sharp, a daring young girl disguised as a boy to serve in the British Air Service. When fate throws them together aboard the HMS Leviathan, a massive, living airship made from genetically engineered creatures, they embark on a world-changing adventure that will challenge everything they know about war, loyalty, and identity.
(Source: Netflix)
CAST

Deryn Sharp

Natsumi Fujiwara

Aleksandar von Hohenberg

Ayumu Murase

Klopp

Yasuhiro Mamiya

Volger Hakushaku

Shunsuke Sakuya

Nora Barlow

Mie Sonozaki

Lilit

Fairouz Ai

Nikola Tesla

Hiroki Touchi

Zaven

Naomi Kusumi

Hoffman

Genta Nakamura

Sultan

Tesshou Genda

Matthews

Satoshi Niwa

George Darwin

Michio Hazama

Rigby

Daichi Hayashi

Thomas

Naoto Kobayashi

Newkirk

Ivan Shibata

Hirst

Yukitarou Nakamura

Nene

Ikuko Tani

Leviathan no Kanchou

Ryousuke Higa

Pavel

Takahiro Fujiwara
EPISODES
Dubbed

Not available on crunchyroll
REVIEWS

AguyinaRPG
69/100Reach exceeding its grasp.Continue on AniListAn epic on the scale of Leviathan is hard to pull off in any circumstance, moreso with the limitations inherent in highly condensing three novels into twelve episodes. This first problem wasn't so apparent to me until halfway through the show, as the first part rather briskly dealt with in a way I would prefer more formulaic adventure stories take - assuming the savvy of their audience. Unfortunately, this compression really fell apart as the scope of the story expanded, leading to an overwhelming feeling that stuff just happens rather than a truly satisfying conclusion to the storylines - and the issues didn't stop there. This prevents Leviathan from having the depth it teases at the start, though it is still mostly enjoyable - especially for younger audiences.
On that point, I have to say there is a certain juvenility in the presentation of this narrative which really hampers its impact. It extends to character interactions, the way darker themes are handled, and ultimately how the pieces of the plot come together. I couldn't shake the feeling that Leviathan was holding itself back in being derived from a series of young adult novels. That sort of fiction has its place, but exploring a complicated geopolitical situation and the horror of armed conflict? I'm not sure that toning things down for that audience helps younger people at all understand what World War I was like for ordinary people - which seems to be its most important theme.
The story throws a lot of themes around with the dangling hope of a satisfying resolution for them all. Some are done decently well, some are never properly developed, and some come so out of nowhere at the end that they made me guffaw. The motifs seem almost like a who's-who of topics for all-ages animation: Duty, found family, being true to yourself, the futility of revenge... All treated with the bluntness of an ironclad broadside and very few given the time to naturally develop. Were this a story more focused on characters rather than an adventure narrative, I think some of those concepts could have hit a lot harder.
While Leviathan is pitched as having two main characters, Alek really takes the lead over Sharp. Unfortunately, this is an example of leaving the far more interesting option on the table. Alek is not without nuance and you get to see some strong development of the course of the show, but he also kinda sucks. Never do you get to see him truly do what his arc is trying to set him up for - he just charges in and gets lucky: a lot. The criticisms thrown at him throughout the story are pretty much all justified and he doesn't really make up for it with standard teen-protagonist tenacity. Sharp has a far more interesting journey and is able to overcome far greater doubts - even if like the rest of the story her parts are truncated.
The setting is worth dwelling on; for some its interest may override many of the story concerns. An alternate Earth at the onset of World War I, with technological development split between advanced mechanical and biological technology. Is it cool? Absolutely. Living airships and grungy mechs: It's a wet dream for some, brought to life beautifully by Studio Orange's 3D tech. But my concern was how this all tied back into the narrative, and that too was underwhelming. You'd expect there would be more to the prejudice against one side or the other and a grand resolution where the two beautifully merge together... Not really. This is a place where it definitely feels like the novels do better than the show with time to linger on the science behind these differing technologies. As it stands, it's more interesting as eye candy than a truly standout alternate reality.
I do also have to nitpick a bit as a history fan with some of the liberties being taken. Well beyond specifics of people and places, the attitudes of the setting are so stereotypically American. The Ottoman Empire is portrayed as a place of unbridled decadence and hierarchy - though even the unruly have-nots seeming pretty well off, all things considered. They also do not have the least bit of Islam in their character, completely scrubbing out that important cultural context. New York gets portrayed as a Jazz Age art deco paradise... Even though Jazz wasn't even popular music until post-War. The one major historical character they include is totally messed up by retroactive internet idea of who he was, having absolutely none of what made him actually interesting. And the concepts of unbridled democracy as the only conceivable solution really come off as a middle school understanding of sociology.
If there's one thing to say about Leviathan, it's that there's a lot to talk about. Some of that is negative - especially towards the end where the writing really breaks down - but as a whole there's quite a bit of fun in the globe-trotting adventure with its many twists and turns. The action is definitely on par with some of the Disney and Pixar films its competing with, even if the art is not quite to the level of Studio Orange's other productions like Beastars and Land of the Lustrous. Character expressions often make up for the lackluster dub and there's some pretty grand moments where all the production works together in harmony to portray the epic scale of the world - despite all the constraints.
Some may say there's little else sadder than seeing an epic be squandered by being underwhelming: I personally don't think so. Leviathan has an underlying quality which makes nothing it does or fails to do a disaster, it's simply just not as exciting as it may have been with time to breath and more attention to detail. Younger viewers will definitely have their imaginations stoked by the creative setting and integration with a larger history - even as it accelerates to move past them at a million miles per hour.

patkarunungan
80/100An emotional story of friendship with a backdrop of World War I, a more science fiction version of itContinue on AniListLeviathan is one of my favourite anime from Summer 2025, and I didn't expect to like an anime whose source material is a recent young adult novel.
Leviathan covers the trilogy of the same name by Scott Westerfeld: 1) Leviathan, 2) Behemoth, and 3) Goliath. It is an alternative retelling of the events of World War I. In that world, there are two major powers battling each other: 1) the Darwinists, who correspond to the Triple Entente, use genetically engineered creatures for battle, and 2) the Clankers, who correspond to the Central Powers, use mechanised walkers.
Note that even though this is an anime about war, it's not about it entirely. It's about the 'bromance' between Prince Aleksandar and Dylan Sharp and how their actions affect the outcome of the Great War.
One does not really need to be knowledgeable of World War I, though it doesn't hurt if you do, to be able to appreciate this anime. It's an historickal fiction, and thus the author, Scott Westerfeld, took liberties in representing certain historickal figures in a good or bad light. Some characters are a fabrication of the author's imagination. For instance, Prince Aleksander is the son of Archduke Franz Ferdinand of Austria in the anime. Prince Aleksander, however, is not an historickal person.
It's also not necessary to know why they went to war because the story will tell you its own version as to why these powers went to war.
The differences in worldview of the Darwinists and the Clankers reflect the differences between Britain and Continental Europe, an example of which can be seen in the differences between Analytick Philosophy, which values lucid prose, and Continental Philosophy with writings filled with gobbledygook, at least from the point of view of the uninitiated.
And before I forget, the synopsis of the anime and the novels tells us that Dylan is actually a girl named Deryn Sharp. This continues the tradition of cross-dressers in anime; the chief example is The Rose of Versailles.
It's not a documentary. It's a war story that is only successful if you are moved or not. The point is to entertain and/or move you emotionally. Leviathan succeeds in having you immerse yourself in the world of the characters and being sympathetic to their struggles. Alek and Dylan belong to different social classes, yet they have a common humanity, which the anime is able to convey, and that's why it advances the idea that friendship transcends class, nationality, and other arbitrary differences.
Speaking of the mood, both OP and ED, which are composed by Joe Hisaishi, leave you emotional. In the opening, titled Paths Combine, it's just an instrumental, but has a vocal version in one of the episodes. It serves as background musick to heighten the emotionality of the scene. The ED sang by Lady Diana Garnet is just great. It's an emotional song that serves as a desert after an emotional episode.
If there's a downside, the animation is not as smooth. The characters appear to be 3D, though not to the point of being like CGI cartoons. The movements are not as smooth.
Another criticism is something levelled by fans of the source material. Much has been removed because properly giving the source material its due requires 24 or so episodes. That's why, for them, the anime feels crammed.
But for people like me who did not read the source material prior to watching the anime, I don't see it as rushed. What's adapted is done well. Perhaps if this were given even more episodes, this anime might deserve a higher score.
I had a great time watching this anime. Despite its imperfections, it succeeds in promoting the source material, at least as far as I'm concerned.
NOTA BENE: A grade of 8 out of 10 [or 80 out of 100 in anilist] means that I find this anime is very good and three notches above average. I enjoyed watching it.
My enjoyment spectrum lies from 4 to 10. If I have scored an anime below 4, I actively dislike it.
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SCORE
- (3.3/5)
TRAILER
MORE INFO
Ended inJuly 10, 2025
Main Studio Orange
Trending Level 1
Favorited by 57 Users
Hashtag #リヴァイアサン



