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Welcome to the encyclopedia dedicated to Snowball Earth (ãđããĶããžãŦãĒãžãđ), a Japanese science-fiction manga written and illustrated by Yuhiro Tsujitsugu.
The series follows Tetsuo Yabusame, a shy boy whose only companion is a giant robot named Yukio. Together, they once fought against powerful galactic monsters that invaded Earth from space. Years after the final battle, Tetsuo returns to a world that has been completely transformed into a frozen wasteland known as Snowball Earth.
An anime television series adaptation produced by Studio Kai is scheduled to premiere in April 2026, bringing the story of this frozen world and its survivors to life.
This wiki documents the characters, story, technology, and world of Snowball Earth. Anyone can help expand the knowledge of this universe.
There are currently 53 articles, 100 files, and 2 active users on this wiki.
Snowball Earth is a near-future science fiction story set in a world where humanity once fought against powerful monsters that came from outer space. To protect the planet, advanced technology and giant robots were created, and a boy named Tetsuo Yabusame became one of the people who stood at the front lines of that battle alongside his partner, the robot Yukio.
However, when Tetsuo returns to Earth years later, he finds that everything has changed. The planet is now covered in snow and ice, turning it into a frozen world known as Snowball Earth. Civilization has collapsed, and the fate of humanity is uncertain.
In this silent and harsh world, Tetsuo begins a journey to discover what happened to Earth and to find other survivors. Along the way, he faces new enemies, uncovers hidden truths, and slowly learns how to connect with others while holding onto the promise he once made with Yukio.

Snowball Earth (ãđããĶããžãŦãĒãžãđ) received a television anime adaptation.
The anime is based on the manga written and illustrated by Yuhiro Tsujitsugu, which has been serialized in Shogakukan's Monthly Big Comic Spirits since January 2021.
The series is directed by Munehisa Sakai and produced by Studio Kai, with Takeshi Iwata serving as assistant director and Shigeru Murakoshi handling the series composition. Character designs are provided by Toshiya Kono, who also serves as chief animation director. The music is composed by Tatsuya Kato, Hiroaki Tsutsumi, and Yuki Kanesaka.
The anime is scheduled to premiere on April 3, 2026 on Nippon TV and its affiliates as part of the Friday Anime Night programming block.
The opening theme song is "Zero" performed by Tuki, while the ending theme song is "Ima Kono Mune ni Tagiru no wa" (äŧããŪčļãŦæŧūããŪãŊ, "What is Surging in My Heart Now") performed by Ai Higuchi.
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All information on this wiki is collected from official and canonical materials related to Snowball Earth.
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These sources include:
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Because different adaptations may present information differently, some details may vary between the manga, and anime. When possible, the original Manga is treated as the primary reference.























