Snowball Earth: Story, Cast and Series Facts

Story and premise

Yukio was destroyed in battle and Tetsuo survived in an escape pod. After eight years in cold sleep, the escape pod finally lands back on Earth. But when Tetsuo emerges he finds a world in ruins, entirely frozen beneath a blanket of ice and snow—snowball Earth! What happened to humanity, how did the planet freeze over, and will Tetsuo be able to keep his last promise to Yukio?

Series details

• Title: Snowball Earth
• Format: Animation
• Language: Japanese
• Genres: Anime
• Premiere date: 2026-04-03
• Status in TVmaze: Running
• Network listed by TVmaze: NTV
• Network country: Japan
• Typical episode runtime: 30 minutes
• TVMaze ID: 90626
• TVDB ID: 465925

Cast and credited roles

• Takuto Yoshinaga — Yabusame Tetsuo
• Daisuke Hirakawa — Yukio
• Ami Koshimizu — Aoi Nogi
• Yoshi Tamura — Heine Takimura
• Kengo Kawanishi — Nayu Izumi et al.
• Tomoyuki Ohno — Tami Sakurai
• Narahira Manami — Yuma Uzuki
• Anna Nagase — Ko Otsuichi
• Chisato Morinaga — Makoto Saionji
• Maki Kawase — Riko Akagi
• Tomokazu Sugita — Sagami Itseki

Seasons in the TVmaze catalogue

• Season 1: premiered 2026-04-03; final listed air date 2026-06-26; episode order: 13.

Source and licence

Adapted from Snowball Earth on TVmaze. The synopsis is reproduced as plain text; catalogue facts, cast and season records are selected and reformatted. This adapted text is available under CC BY-SA 4.0, following the TVmaze API licence. Network and web-channel credits identify the service listed in this source; they do not establish current streaming availability.