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Leviathan

Leviathan

ONA · Summer 2025 · 12 episodes · Finished

Must watchAniList 66%

Adventure · Mecha · Sci-Fi

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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.

Where to watch

Netflix ↗

The verdict

Senpai’s take

Season picksMust watchSummer 2025

Studio Orange's Netflix adaptation of Scott Westerfeld's alt-history 1914 novel, with diesel mechs versus Darwinist bio-beasts and a flying whale airship. A batch release that deserves much more fanfare. The Ghibli-esque biodiesel-punk world is the culmination of everything Orange learned on Trigun, Land of the Lustrous and Beastars. It is a world worth wanting to live in.

Trailer

Facts

Studio
Orange
Source
Other
Season
Summer 2025
Episode length
25 minutes
Episodes
12
Format
ONA
First aired
Jul 10, 2025
Last aired
Jul 10, 2025

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Characters

Aleksandar von HohenbergAleksandar von HohenbergMainAyumu Murase · Japanese voice
Deryn SharpDeryn SharpMainNatsumi Fujiwara · Japanese voice
Volger HakushakuVolger HakushakuSupportingShunsuke Sakuya · Japanese voice
Nora BarlowNora BarlowSupportingMie Sonozaki · Japanese voice
KloppKloppSupportingYasuhiro Mamiya · Japanese voice
NewkirkNewkirkSupportingIvan Shibata · Japanese voice
NeneNeneSupportingIkuko Tani · Japanese voice
Nikola TeslaNikola TeslaSupportingHiroki Touchi · Japanese voice