New cast members for To Your Eternity Season 3 were announced alongside the unveiling of a new key visual on the anime’s official website.

The new cast members include (left to right):
- Aoi Koga as Aiko
- Fukushi Ochiai as Tamaki Kazumu
- Aya Uchida as Hanna
- Chiharu Sawashiro as Senba Suzuhiko
- Shouto Kashii as Kazumitsu

To Your Eternity Season 3 will premiere in October 2025, and it will adapt the manga’s “This World” arc. The anime will air on the NHK General channel, and Crunchyroll will stream the anime as it airs in Japan.
The previously announced To Your Eternity Season 3 cast and staff includes:
Cast
- Reiji Kawashima as Fushi
- Kenjirō Tsuda as The Observer
- Tomori Kusunoki as Mizuha
- Megumi Han as Yūki Aoki
- Yumiri Hanamori as Satoru
Staff
- Director: Sōta Yokote
- Studio: Drive and STUDIO MASSKET
- Chief Director: Kiyoko Sayama
- Series’ Scripts Overseer: Shinzō Fujita
- Character Designer: Koji Yabuno
- Composer: Ryo Kawasaki
- Sound Director: Takeshi Takadera
The anime adaptation of Yoshitoki Ōima’s manga series initially premiered in April 2021, with season 2 releasing in October 2022. Crunchyroll is currently streaming the first two seasons with English subs and English dubs.
Lastly, here’s an overview of the anime series, via Crunchyroll:
In the beginning, an “orb” is cast unto Earth. “It” can do two things: change into the form of the thing that stimulates “it”; and come back to life after death. “It” morphs from orb to rock, then to wolf, and finally to boy, but roams about like a newborn who knows nothing. As a boy, “it” becomes Fushi.
Through encounters with human kindness, Fushi not only gains survival skills, but grows as a “person”. But his journey is darkened by the inexplicable and destructive enemy Nokker, as well as cruel partings with the people he loves.