Isekai Quartet is a Japanese anime series that serves as a chibi-style crossover between the light novel series KonoSuba, Overlord, Re:Zero − Starting Life in Another World and The Saga of Tanya the Evil, all published by Kadokawa Corporation.
[7] The main production staff members returned to reprise their respective roles.
[8] The season includes guest appearances of characters from The Rising of the Shield Hero.
[9] Hino, Fukushima, Kobayashi and Yūki perform the second season's opening theme song "Isekai Showtime" (異世界ショータイム, Isekai Shōtaimu), while Sumire Uesaka, Rie Takahashi, Inori Minase, and Saori Hayami perform the second season's ending theme song, "Ponkotsu!
[17][18] The film's theme song is "Melodic Road Movie" (メロディックロードムービー, Merodikku Rōdo Mūbī) performed by Konomi Suzuki and featuring Kashitarō Itō.