Isekai Quartet anime‘s official website unveiled the main trailer for the upcoming 3rd season that confirms October 13, 2025 release date.
The opening theme, “Isekai Concerto,” is performed by the talented voice actors behind Ains (Satoshi Hino), Kazuma (Jun Fukushima), Subaru (Yūsuke Kobayashi), and Tanya (Aoi Yuki). The ending song, “Kimi Iro, Boku Iro,” is sung by Konomi Suzuki and Kashitaro Ito, delivering a lively and emotional close to each episode.
The anime also revealed a key visual.
Isekai Quartet is a playful Japanese anime series featuring a chibi-style mashup of characters from four popular light novel franchises under Kadokawa Corporation: KonoSuba, Overlord, Re:Zero, and The Saga of Tanya the Evil. The first season entertained audiences from April to June 2019. A follow-up season ran from January to March 2020, introducing new faces from The Rising of the Shield Hero and Cautious Hero: The Hero Is Overpowered but Overly Cautious. Following the second season, a feature film, Isekai Quartet: The Movie – Another World, hit theaters in June 2022, expanding the crossover adventure.
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