Inside Netflix’s 'Leviathan': Plot, Cast, Release Date, and Everything to Know About the Epic Anime Series

Published 07/11/2025, 9:43 AM EDT

A new anime storm has taken shape on Netflix, and it is nothing like fans of Japanese wonders have ever seen before. With a world shaped by steam, secrets, and otherworldly oddities, Leviathan delivers a journey where nothing is prima facie. There is talk of war, whispers of rebellion, and a sky that holds much more than just clouds. From the mind behind one of anime’s boldest visions — BEASTARS — this one is shaking things up in the best possible way.

When beasts soar and machines march, two hidden lives spark an airborne revolution.

A world at war sets the stage for Leviathan’s bold steampunk plot

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Leviathan chronicles an alternate version of World War I, bringing the divided world of 1914 to life. While one faction of the world allies with the Clankers — the Austro-Hungarian Empire, which utilizes massive mechanized weapons — the other allies with the Darwinists, who employ bioengineered creatures to counter. 

Caught in the middle of the highly charged conflict are two uncanny heroes — Prince Aleksandar, the fugitive heir to the Austro-Hungarian throne, and Deryn Sharp, a brave Scottish girl who disguises herself as a man to serve in the British Air Service. Their paths cross aboard the almighty titular airship that takes them on a journey, changing the course of their lives. But who brings heart, grit, and fire to its sky-high adventure?

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Meet the cast who turn a steampunk war into something deeply personal.

A look at the voices bringing Leviathan’s skybound saga to life

Leviathan brings together a powerhouse of Japanese vocal talents with Ayumu Murase lending his voice to the fugitive prince Alek, and Natsumi Fujiwara embodying the bold but disguised Deryn Sharp. The ensemble also includes Shunsuke Sakuya as Count Volger, Fairouz Ai as Lilit, Hiroki Touchi as Nikola Tesla, and more.

The audio experience ascends further with an original score by Nobuko Toda and Kazuma Jinnouchi, celebrated for their cinematic intensity. Adding a layer of emotional depth, Joe Hisaishi’s original song echoes the heart of a world at war, where identity, loyalty, and survival are constantly tested in the skies. Can't wait for Leviathan? Well, wait no further!

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The skies have opened — Leviathan is now streaming and ready to shake up your watchlist.

Leviathan lands with a roar — when and where to witness the steampunk spectacle

Based on a 2009 novel by Scott Westerfeld, Leviathan is now streaming on Netflix alongside multiple must-watch anime releases of the year. The offering premiered all 12 episodes on the streaming giant on July 10 and already has fans hooked. Rated TV-14 and categorized as an Original Net Animation (ONA), the effort embodies not only the titular Westerfeld novel but also its sequels, Behemoth and Goliath.

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Leviathan is produced by Qubic Pictures, with Studio Orange handling the visuals. The studio, as mentioned above, is renowned for BEASTARS, as well as Trigun Stampede and Land of the Lustrous. Christophe Ferreira directs the effort, with Tadashi Nakajima serving as the art director. While an English dub of the season is set to follow soon, Leviathan, which is now out, is rightly serving as anime lovers’ newest obsession.

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Will you be watching Leviathan on Netflix soon? Let us know in the comments.

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Seema Sinha

70 articles

Seema Sinha is a journalist at Netflix Junkie, covering the celebrity culture and global cinema beats. With three years of experience at major Hollywood media verticals, she filters real news from the gossip and buzz. Her core focus is on pop culture narratives surrounding musicians—primarily Taylor Swift—with her reporting striking a fine balance between human insight and editorial clarity.

Edited By: Hriddhi Maitra

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