'Snowball Earth' Reveals Additional Cast, Ending Theme, First Promo

Snowball Earth Anime Unveils Additional Cast, Key Visual, and Theme Songs

The official website for the television anime adaptation of Yuuhirou Tsujitsugu's Snowball Earth manga has provided significant updates regarding the upcoming series. Enthusiasts and prospective viewers can now anticipate the inclusion of new voice cast members, a visually engaging key visual, the official ending theme song, and the debut of the first promotional video. These revelations were made public on Thursday, generating considerable anticipation for the anime's launch.

Premiere Schedule Confirmed

The television anime series based on Snowball Earth is scheduled to commence its broadcast on April 3. Viewers can tune in at 11:30 p.m. to catch the premiere episode. The series will be aired on the Nippon Television Network, making it accessible to a wide audience upon its debut. This announcement firmly establishes the timeframe for the highly awaited adaptation.

Expanded Voice Cast Revealed

The production team for the Snowball Earth anime has unveiled a roster of talented voice actors who will portray key characters in the series.

Nayuta Izumi will be voiced by Kengo Kawanishi, an actor recognized for his work in Dr. Stone. His involvement is set to bring a distinct performance to the character.

Tamiya Sakurai's role will be undertaken by Tomohiro Ono, who has previously contributed to productions such as Tomodachi Game. Ono's experience is expected to add depth to Tamiya Sakurai.

Yuma Uzuki is slated to be voiced by Manami Narahira, known for her prior roles including her participation in Dance Dance Danseur. Narahira's casting indicates a thoughtful approach to character portrayal.

Otoichi Kinoe will feature the vocal talents of Anna Nagase, an actress whose credits include Summertime Render. Nagase's performance is anticipated to leave a notable impression.

The character of Makoto Saionji will be brought to life by Chitose Morinaga, who has previously been part of the cast for New Game. Morinaga's voice is poised to contribute significantly to Makoto Saionji.

Riko Akagi's voice will be provided by Maki Kawase, an actress with experience from series such as Kuma Kuma Kuma Bear. Kawase's role in the anime further expands the diverse cast.

Isseki Sagami's character will be voiced by Tomokazu Sugita, an acclaimed voice actor with a substantial career, including his prominent role in Gintama. Sugita's participation adds a layer of established talent to the ensemble.

Theme Song Artists Announced

The musical landscape of the Snowball Earth anime will be shaped by two distinct theme songs. The opening theme, titled "Rei-zero-," will be performed by the singer-songwriter tuki. Tuki is recognized for various musical contributions, including the theme song performance for Sakura Kimi Watashi. This opening track is poised to set the tone for each episode.

For the ending theme, "Ima Kono Mune ni Tagiru no Wa," the artist Ai Higuchi has been selected to perform. Ai Higuchi is known for her work on other anime productions, including her contribution to Shingeki no Kyojin: The Final Season Part 2. Both "Rei-zero-" and "Ima Kono Mune ni Tagiru no Wa" are featured in the recently released first promotional video, offering a preview of the anime's auditory experience.

Production Team Details

The production of the Snowball Earth anime is being overseen by a team of experienced professionals in the animation industry.

Munehisa Sakai, known for his directorial work on Zombieland Saga, is directing the anime at Studio KAI. His vision will guide the overall animated presentation.

Assisting with the direction is Takeshi Iwata, whose previous roles include contributions to The iDOLM@STER Shiny Colors. Iwata's support will be integral to the production process.

The series composition is being handled by Shigeru Murakoshi, who has previously worked on Ninja Kamui. Murakoshi will be responsible for structuring the narrative flow of the anime.

Character designs for the series are being crafted by Toshiya Kouno, recognized for his design work on Himesama "Goumon" no Jikan desu. Kouno's designs will define the visual appearance of the characters.

The musical score for the anime will be a collaborative effort by three composers. Tatsuya Katou, known for his work on Trigun Stampede, will contribute to the music. Hiroaki Tsutsumi, whose credits include Kuromukuro, is also part of the music composition team. Yuki Kanesaka, known for Koukaku Kidoutai (TV), completes the trio of composers. Their combined talents are expected to create an immersive audio backdrop for the series.

Manga Background and English Release

The source material for the anime, Yuuhirou Tsujitsugu's adventure sci-fi manga, Snowball Earth, began its serialization in Gekkan! Spirits in January 2021. The manga has been consistently published, with Shogakukan releasing its tenth volume in December 2025. This ongoing serialization indicates the manga's established presence.

For English-speaking audiences, VIZ Media acquired the license for the manga's English release in June 2023. This licensing agreement brought the captivating story to an international readership. VIZ Media has continued to publish the series in English, with the eighth volume having been released on February 17, making the manga accessible globally.