Leviathan

Leviathan

リヴァイアサン
Ended First aired 10/Jul/2025 Japan Japanese 1 season(s) 13 episode(s)
AnimationSci-Fi & FantasyComedy
The fantasy world of Aquafall is abound with water and greenery, and populated by dragons and fairies. Meteorites of evil creatures threaten all living things on the planet. The fairy Syrup assembles the Aquafall Defense Force, with three girls of the dragon clans as recruits. The story follows Syrup and the dragon girls Leviathan, Bahamut, and Jörmungandr as they work together to battle enemies and grow up.
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TimeScore 33% Skip It
Binge Meter 48% Slow Burn
Episode Pulse Quiet 40% activity score
Drop Rate 0% Very Low

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Seasons & Episodes

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Season 1 · Season 1
13 episode(s) · Air date: 10/Jul/2025
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Season Overview

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S1E13
I'll Definitely Defend It!
Air date: 06/Jul/2013 · Time: 23:30 · Runtime: 20 min
Summary

The giant Lucasite appears in Leviatan's village again, menacing the town. Leviatan and Jörmungand are raring to go, but Bahamut has not regained her will to fight. Telling her they believe she will come, Leviatan and Jörmungand leave Bahamut to fight.

Summary

The giant Lucasite appears in Leviatan's village again, menacing the town. Leviatan and Jörmungand are raring to go, but Bahamut has not regained her will to fight. Telling her they believe she will come, Leviatan and Jörmungand leave Bahamut to fight.

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S1E12
Under the Same Sky
Air date: 10/Jul/2025 · Time: 23:30 · Runtime: 29 min
Summary

Tesla issues a deadly ultimatum as a last resort. Can Sharp and Alek, stuck on opposing sides, prevent the conflict from escalating before it's too late?

Summary

Tesla issues a deadly ultimatum as a last resort. Can Sharp and Alek, stuck on opposing sides, prevent the conflict from escalating before it's too late?

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S1E11
Goliath
Air date: 10/Jul/2025 · Time: 23:30 · Runtime: 23 min
Summary

Determined to uncover the truth about Tunguska, Alek and Sharp confront Tesla and learn about the invention responsible for the destruction: the Goliath.

Summary

Determined to uncover the truth about Tunguska, Alek and Sharp confront Tesla and learn about the invention responsible for the destruction: the Goliath.

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S1E10
Truth and Lies
Air date: 10/Jul/2025 · Time: 23:30 · Runtime: 25 min
Summary

Tensions run high after Alek learns the truth about his friend. But before they can talk things over, Sharp gets into a dangerous predicament.

Summary

Tensions run high after Alek learns the truth about his friend. But before they can talk things over, Sharp gets into a dangerous predicament.

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S1E9
Tunguska
Air date: 10/Jul/2025 · Time: 23:30 · Runtime: 22 min
Summary

The Leviathan and its crew arrive in Siberia to meet Barlow's uncle. He reveals the source behind numerous mysterious phenomena around the world.

Summary

The Leviathan and its crew arrive in Siberia to meet Barlow's uncle. He reveals the source behind numerous mysterious phenomena around the world.

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S1E8
Behemoth
Air date: 10/Jul/2025 · Time: 23:30 · Runtime: 25 min
Summary

On the day of the coup, Alek urges Klopp to leave for his safety. Later, unexpected news forces the revolutionaries to act before the Behemoth arrives.

Summary

On the day of the coup, Alek urges Klopp to leave for his safety. Later, unexpected news forces the revolutionaries to act before the Behemoth arrives.

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S1E7
Stormy Seas
Air date: 10/Jul/2025 · Time: 23:30 · Runtime: 26 min
Summary

A patrol jeopardizes the British secret operation, forcing Sharp to flee into Istanbul's streets. Alek commits himself to the revolutionary army's cause.

Summary

A patrol jeopardizes the British secret operation, forcing Sharp to flee into Istanbul's streets. Alek commits himself to the revolutionary army's cause.

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S1E6
Shadows of Istanbul
Air date: 10/Jul/2025 · Time: 23:30 · Runtime: 28 min
Summary

Sharp and Dr. Barlow finally meet the Sultan, hoping to smooth things over with a rare gift. Meanwhile, a mysterious girl saves Alek from a German patrol.

Summary

Sharp and Dr. Barlow finally meet the Sultan, hoping to smooth things over with a rare gift. Meanwhile, a mysterious girl saves Alek from a German patrol.

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S1E5
Far to the East
Air date: 10/Jul/2025 · Time: 23:30 · Runtime: 23 min
Summary

The Leviathan encounters a deadly Clanker weapon on its journey towards Istanbul. Upon arriving in the city, Alek and his comrades make plans to escape.

Summary

The Leviathan encounters a deadly Clanker weapon on its journey towards Istanbul. Upon arriving in the city, Alek and his comrades make plans to escape.

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S1E4
The Weight of the Past
Air date: 10/Jul/2025 · Time: 23:30 · Runtime: 23 min
Summary

With Clanker forces hot on their tail, the wounded Leviathan needs a miracle to get off the ground. Alek makes an offer the Darwinists can't refuse.

Summary

With Clanker forces hot on their tail, the wounded Leviathan needs a miracle to get off the ground. Alek makes an offer the Darwinists can't refuse.

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S1E3
Clankers and Darwinists
Air date: 10/Jul/2025 · Time: 23:30 · Runtime: 28 min
Summary

Alek learns why he's hunted and, despite Volger's advice, sneaks out to aid the Leviathan's crew. He saves Sharp, who doesn't buy the prince's story.

Summary

Alek learns why he's hunted and, despite Volger's advice, sneaks out to aid the Leviathan's crew. He saves Sharp, who doesn't buy the prince's story.

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S1E2
Prelude to War
Air date: 10/Jul/2025 · Time: 23:30 · Runtime: 28 min
Summary

As Europe teeters on the edge of an all-out war, Alek struggles with his new life in hiding. Sharp gets acquainted with the Leviathan and its crew.

Summary

As Europe teeters on the edge of an all-out war, Alek struggles with his new life in hiding. Sharp gets acquainted with the Leviathan and its crew.

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S1E1
Into the Storm
Air date: 10/Jul/2025 · Time: 23:30 · Runtime: 25 min
Summary

1914. Prince Alek of Austria-Hungary goes on an unusual practice session in a Stormwalker. In Edinburgh, Sharp eagerly takes flight in a Huxley.

Summary

1914. Prince Alek of Austria-Hungary goes on an unusual practice session in a Stormwalker. In Edinburgh, Sharp eagerly takes flight in a Huxley.

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Cast

Main cast members.

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Ayumu Murase
Ayumu Murase
Prince Aleksandar (voice)
Natsumi Fujiwara
Natsumi Fujiwara
Sharp (voice)
Shunsuke Sakuya
Shunsuke Sakuya
Count Volger (voice)
Yasuhiro Mamiya
Yasuhiro Mamiya
Klopp (voice)
Mie Sonozaki
Mie Sonozaki
Dr. Nora Barlow (voice)
Ivan Shibata
Ivan Shibata
Newkirk (voice)
Fairouz Ai
Fairouz Ai
Lilit (voice)
Hiroki Touchi
Hiroki Touchi
Nikola Tesla (voice)
Ikuko Tani
Ikuko Tani
Nene (voice)
Genta Nakamura
Genta Nakamura
Hoffman (voice)
Daichi Hayashi
Daichi Hayashi
Rigby (voice)
Satoshi Niwa
Satoshi Niwa
Matthews (voice)
Naoto Kobayashi
Naoto Kobayashi
Thomas (voice)

Crew

Creators, directors, writers, and production crew.

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Tadashi Nakajima
Art Direction
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Christophe Ferreira
Series Director, Story, Storyboard Artist
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Rie Matsubara
Editor
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Scott Westerfeld
Co-Executive Producer, Novel
Justin Leach
Justin Leach
Executive Producer
Taiki Sakurai
Taiki Sakurai
Executive Producer
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Katrina Minett
Producer
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Yoshihiro Watanabe
Producer
Yoshihiro Watanabe
Yoshihiro Watanabe
Producer
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Kazuma Jinnouchi
Original Music Composer
Nobuko Toda
Nobuko Toda
Original Music Composer
Joe Hisaishi
Joe Hisaishi
Songs

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