Leviathan

Also known as: リヴァイアサン

Leviathan is an ONA by Orange that premiered in Summer 2025. It is finished airing with 12 episodes of about 25 minutes each. Genres: Adventure, Mecha, Sci-Fi. Average AniList score: 6.6/10.

Synopsis

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)

Leviathan episodes

  1. Episode 1: Into the Storm — aired July 10, 2025
  2. Episode 2: Prelude to War — aired July 10, 2025
  3. Episode 3: Clankers and Darwinists — aired July 10, 2025
  4. Episode 4: The Weight of the Past — aired July 10, 2025
  5. Episode 5: Far to the East — aired July 10, 2025
  6. Episode 6: Shadows of Istanbul — aired July 10, 2025
  7. Episode 7: Stormy Seas — aired July 10, 2025
  8. Episode 8: Behemoth — aired July 10, 2025
  9. Episode 9: Tunguska — aired July 10, 2025
  10. Episode 10: Truth and Lies — aired July 10, 2025
  11. Episode 11: Goliath — aired July 10, 2025
  12. Episode 12: Under the Same Sky — aired July 10, 2025

Main characters

  • Aleksandar von Hohenberg (Main) — voiced by Ayumu Murase
  • Deryn Sharp (Main) — voiced by Natsumi Fujiwara
  • Volger Hakushaku (Supporting) — voiced by Shunsuke Sakuya
  • Nora Barlow (Supporting) — voiced by Mie Sonozaki
  • Klopp (Supporting) — voiced by Yasuhiro Mamiya
  • Newkirk (Supporting) — voiced by Ivan Shibata
  • Nene (Supporting) — voiced by Ikuko Tani
  • Nikola Tesla (Supporting) — voiced by Hiroki Touchi
  • Lilit (Supporting) — voiced by Fairouz Ai
  • Hoffman (Supporting) — voiced by Genta Nakamura

Anime like Leviathan

Genres: Adventure, Mecha, Sci-Fi · Season: Summer 2025