To Your Eternity Season 3 Adds 4 More Additional Cast Members

To Your Eternity Season 3 Announces 4 More Additional Cast Members
to your eternity season 3 four new cast visual feature image cropped©大今良時・講談社/不滅のあなたへS3製作委員会

Four new cast members have been officially revealed for the highly anticipated third season of To Your Eternity. This new season is set to debut in Japan on October 4, 2025, and will consist of 22 episodes. 
The additional cast members are friends of Mizuha, and they include:  

  • • Hikaru Tono as Saki
  • • Riko Aono as Funa
  • • Yui Kondo as Nagisa
  • • Sachi Kokuryu as Kasabe
  • • Reiji Kawashima as Fushi (reprising)
  • • Kenjiro Tsuda as the Beholder (reprising)
  • • Tomori Kusunoki as Mizuha (previously the voice of Hisome in Season 2)
  • • Yumiri Hanamori as Satoru
  • • Megumi Han as Yuki Aoki (previously the voice of Torta in Season 2)
  • • Rumi Okubo as Mimori 
  • • Shizuka Ito as Izumi 
  • • Shinichiro Miki as Itsuki  
  • • Tasuku Hatanaka as Hirotoshi

Kiyoko Sayama (Season 2 director) takes on the role of chief director for this season, with Sota Yokote (Bye Bye, Earth assistant director) directing, Shinzo Fujita (reprising) as the series screenwriter, Koji Yabuno (reprising) as character designer, and Ryo Kawasaki (reprising) as music composer. Drive (reprising from Season 2) and STUDIO MASSKET are responsible for the animation production.
Crunchyroll will offer the third season streaming globally, and summarizes its main premise as follows: 
After the conflicts in Renril and the defeat of the Nokkers, Fushi awakens in the contemporary world. He relishes a tranquil existence surrounded by both youthful and elderly friends. Yet, as dark shadows start to emerge, Fushi discovers the true intentions of his creator, The Beholder. Confronted with new challenges, the moment draws near for Fushi to make a vital choice.
The anime’s inaugural season aired from April to August 2021, while the second season spanned from October 2022 to March 2023.

To Your Eternity Season 3 main visual©大今良時・講談社/不滅のあなたへS3製作委員会

The original fantasy drama manga series by Yoshitoki Oima was first serialized in Kodansha’s Weekly Shonen Magazine on November 9, 2016, and concluded on June 4, 2025. A total of 25 tankobon volumes were published in Japan.
Kodansha USA releases the To Your Eternity manga in English, and summarizes the main premise as follows:
A solitary boy roaming the Arctic regions of North America forms a bond with a wolf, as they rely on each other to endure the harsh conditions. However, the boy carries a troubled past, and the wolf has secrets of its own…

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Sources: To Your Eternity Official Twitter, Anime News Network