Snowball Earth
“Frozen Mecha, Slow Plot”
There are times when we have to move away from home either temporarily or permanently. After all, not leaving your home to experience the outside world in any form is unadvised, as it means living in a comfort bubble and not knowing any better. Going beyond the familiar borders can greatly broaden your perspective and understanding, helping you become a more adaptable and compassionate person. But what if the home you return to at some point is no longer the same place you knew? After all, time changes all…
“Snowball Earth” is a 13-episode TV anime series that aired from the 3rd of April until the 26th of June in spring 2026. It was produced by Nippon Television Network, dugout, and ADK Emotions, aired on Nippon TV’s Friday Anime Night Block, and brought to life by Studio KAI. The main staff behind it includes producers Saitou Hibiki, Hirahara Yuito, and Ishihara Shinya, as well as assistant producer Tsumura Shouta. Featuring the genres of adventure and sci-fi, along with a mecha theme, the series is targeted at the Seinen demographic. Each episode is 23 minutes long and has earned a PG-13 rating for teenagers 13 years or older.
The anime is based on the manga series of the same title, which began publication on the 27th of January 2021 and is still ongoing at the time of writing this review. It features the additional action genre, is the work of author and artist Tsujitsugu Yuuhirou, and is serialized in Gekkan! Spirits. It was even published in English by VIZ Media under the VIZ Signature imprint on the 16th of April 2024 and has been simulpub via VIZ Manga. An Italian release via Dynit also began on the 24th of October 2022. A TV anime sequel titled “Snowball Earth Season 2” has also been announced, and it is said to follow the events of the manga, but no further details are known.
The story centers on Yukio and Yabusame Tetsuo, the former originally a robot designed to fight monsters known as kaiju, which was destroyed in battle, and the latter, Yukio’s pilot. He is a member of the anti-kaiju force E-RDE and survives the aforementioned battle thanks to an escape pod. Eight long years pass while he remains in a cold sleep before the pod finally lands on Earth once more. What our MC finds afterward is hardly the world he knows; it is a planet in ruins, frozen completely beneath a thick blanket of ice and snow. It can only be described as Snowball Earth! Whatever happened to humanity while he was gone, and how did Earth freeze over like that? Most importantly, as things stand, will Tetsuo be able to keep the last promise he made to Yukio…?
At its core, the narrative centers on human connection and grief. Being set in a post-apocalyptic world helps build on these themes while avoiding dull or dreary territory, thanks to a quirky and somewhat intriguing cast. The masterful use of the setting to convey these human characters’ feelings and shortcomings is also worthy of appreciation. But the biggest issue here is the pacing, which is way too slow to keep me motivated enough to continue.
Despite having plenty of source material, the creators did so little with these 13 episodes that it feels off most of the time. This is a shame because this tale has the potential to be more, and it already nails the whimsical, fun tone without taking itself too seriously. Meanwhile, the narrative keeps trying to advance to an action that doesn’t amount to much, especially for the MC, who lacks the will or motivation to back it up. He does not make important decisions when he really ought to, and he often fails to develop meaningful relationships with other characters, which makes the progression feel lacking.
The cast faces plenty of obstacles and conflicts, which build up the much-needed tension that would normally spur an MC to make tough calls, but here he simply doesn’t. So even by the end, it feels like the “story” halted somewhere in the middle and didn’t go anywhere afterward, ending up just “meh.” Instead of progressing, this department is slowly deteriorating, and we don’t even get a proper resolution…
The character department is predominantly Tetsuo: an extremely awkward kid whose whole identity revolves around being the “savior of humanity” or something along those lines. He wishes to be useful and become the key to a new world, yet he struggles with all types of interpersonal relationships. Last I checked, you can’t change much if you don’t touch people’s hearts and build meaningful relationships with them, but this man won’t give up. The man is helplessly optimistic and keeps pressing on despite a myriad of crushing failures. These losses are treated more as goofy mistakes than as defeats with real consequences, making the weight of each event feel underwhelming.
This is an acceptable starting point for an MC. Still, this guy doesn’t develop either, remaining the very same person by the end and effectively making all the experiences thus far pointless. I could count the number of times the story became stilted just because of Tetsuo’s complete cowardice and lack of willpower. This is unfortunate because he, too, had the potential to grow into a more likable MC; his base form isn’t bad at all, and I quite liked his positivity. But what’s the point if he never progresses?
The art and animation department is something I appreciated, even though most people say it’s mediocre. Yes, they use CGI, but they use it very well, especially considering the genres and themes of this series. The creators do try to hide the 3D with 2D visuals at select points for some reason, but it doesn’t detract from the overall quality of the animation. I mean, the CGI facilitates the somewhat forced action seamlessly, with good timing and presentation that also brings a hint of nostalgia.
The animation flows really well alongside the CGI elements, too, so kudos to the visual effects department. The artwork is neat and soft on the eyes too; everything from the desolate landscapes to the mecha designs looks so interesting and cool. Finally, the character designs are simple and beautifully reflect the emotional whimsy of the main cast. Even the CGI used for character animation is well done, and I particularly liked how they executed the Mecha-versus-Kaiju fights. I painfully noticed that the animation just slows down whenever the dialogue picks up, so even fights become slow-paced and are broken up into segments by multiple flashbacks. These were okay at first because they at least introduced new characters, but once the plot staggers, they quickly become annoying. When you finally think it’s over and the story is progressing, you’re hit with another snail pace while people are just standing in the snow talking, coupled with multiple flashbacks nobody cares for.
The sounds and music department is decent, with the highlight being the ending theme “Ima Kono Mune ni Tagiru no wa” by Ai Higuchi. It has a unique, space-meets-snow kind of hopeful vibe, featuring a sequence of moments across snowy landscapes, starry skies, and warm locations, unfolding at a slow pace. The opening theme is “Rei-zero—” by tuki, a piece that starts slow and gets going with visuals of the characters and big battles, the kind of theme you might have heard hundreds of times before, though. The OSTs are great, but they don’t matter when the story is stuck, and most events are pointless. Nothing stood out to me about the voice acting either, and the dialogue that was supposed to hold up the plot progression didn’t have enough impact on its own either.
Overall, “Snowball Earth” is not a terrible show, but it most certainly let me down the more I watched it. The conclusion, in particular, was very disappointing, compounded by the plot stagnation, because they try to make the villain seem more nuanced without putting in the work necessary throughout the story to get him there. The outcome of the battle was as expected, but it really makes light of what was supposed to be the season’s central conflict. So what we’re left with is a show that nailed the premise and even the characters at the beginning, and it had decent worldbuilding that made me care about this world. Still, it fails to make any meaningful progress in its story or character development. There is a chance that Season 2 capitalizes on the existing strengths and leads this tale to its inherent potential, but we can’t say for certain right now. Maybe the start was supposed to be this slow for a bigger payoff later on, but I can’t recommend the existing series based on that “maybe” alone. If any of the issues I’ve mentioned thus far bug you, it’s best to find a different anime to watch for now.
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