A new key visual, main trailer, and theme songs have been revealed for the upcoming third season of Isekai Quartet, which will begin airing in Japan on October 13, 2025.
The latest trailer previews the third season’s new opening theme “Isekai Concerto” by Satoshi Hino, Jun Fukushima, Yusuke Kobayashi, and Aoi Yuki as their respective characters Ains, Kazuma, Subaru, and Tanya. It also highlights the ending theme song “Kimi Iro, Boku Iro” by Konomi Suzuki and Kashitaro Ito.
Minoru Ashina is returning to direct and write the scripts for season three, with Minoru Takehara as character designer and chief animation director and Ruka Kawada as music composer. Studio Puyukai is in charge of the animation production once again.
A third season of Isekai Quartet was first announced in June 2025. The first season of the spin-off crossover aired in 2019, while the second season aired in 2020. An anime film titled Isekai Quartet The Movie: Another World was released in 2022. Crunchyroll is streaming both seasons and the film worldwide.
The chibi anime series started with the characters of Re:Zero − Starting Life in Another World, Overlord, The Saga of Tanya the Evil, and Konosuba -God’s blessing on this wonderful world! being transported to a school setting. The cast of The Rising of the Shield Hero joined in the second season, and the third season will feature characters from The Eminence in Shadow.
Sources: Isekai Quartet Official Twitter, Anime News Network
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