Isekai Quartet


Isekai Quartet is a Japanese anime series that is a chibi-style crossover between the light novel series KonoSuba, Overlord, Re:Zero and The Saga of Tanya the Evil, all published by Kadokawa Corporation. The first season aired from April to June 2019. A second season aired from January to March 2020, including characters from The Rising of the Shield Hero and Cautious Hero: The Hero Is Overpowered but Overly Cautious. An anime film set after the second season, titled Isekai Quartet: The Movie – Another World, was released in June 2022. A third season aired from October to December 2025, including characters from The Eminence in Shadow.

Premise

One day, a magic button suddenly appears. The protagonists from KonoSuba, Overlord, Re:Zero, and The Saga of Tanya the Evil all press the button occasionally, unintentionally and move to a parallel world — another brand new isekai — where a new story featuring high school life begins. Soon, they are joined by protagonists from The Rising of the Shield Hero, Cautious Hero: The Hero Is Overpowered but Overly Cautious and The Eminence in Shadow.

Characters

SeriesCharacterJapaneseEnglish
KonoSuba: God's Blessing on this Wonderful World!Kazuma SatoJun FukushimaArnie Pantoja
KonoSuba: God's Blessing on this Wonderful World!AquaSora AmamiyaFaye Mata
KonoSuba: God's Blessing on this Wonderful World!MeguminRie TakahashiErica Mendez
KonoSuba: God's Blessing on this Wonderful World!Lalatina Dustiness Ford Ai KayanoCristina Vee
KonoSuba: God's Blessing on this Wonderful World!ChrisAyaka SuwaKira Buckland
KonoSuba: God's Blessing on this Wonderful World!VanirMasakazu NishidaAnthony Bowling
KonoSuba: God's Blessing on this Wonderful World!YunyunAki ToyosakiKayli Mills
KonoSuba: God's Blessing on this Wonderful World!ChomusukeHitomi NabatameRyan Bartley
KonoSuba: God's Blessing on this Wonderful World!WizYui HorieBrianna Knickerbocker
KonoSuba: God's Blessing on this Wonderful World!RuffianTetsu InadaJeremy Inman
OverlordAinz Ooal GownSatoshi HinoChris Guerrero
OverlordAlbedoYumi HaraElizabeth Maxwell
OverlordShalltear BloodfallenSumire UesakaFelecia Angelle
OverlordAura Bella FioraEmiri KatōJill Harris
OverlordMare Bello FioreYumi UchiyamaMegan Shipman
OverlordDemiurgeMasayuki KatōJeff Johnson
OverlordCocytusKenta MiyakeBryan Massey
OverlordHamsukeAkeno WatanabeHeather Walker
OverlordYuri AlphaHiromi IgarashiWhitney Rodgers
OverlordLupusregina BetaMikako KomatsuAlexis Tipton
OverlordNarberal GammaManami NumakuraAnastasia Muñoz
OverlordCZ2128 DeltaAsami SetoMichelle Rojas
OverlordSolution EpsilonAyane SakuraMallorie Rodak
OverlordEntoma Vasilissa ZetaKei ShindōTia Ballard
OverlordPandora's ActorMamoru MiyanoEric Vale
OverlordSebas TianShigeru ChibaBill Jenkins
OverlordKyouhukouHiroshi KamiyaJohn Swasey
Re:Zero − Starting Life in Another WorldSubaru NatsukiYūsuke KobayashiSean Chiplock
Re:Zero − Starting Life in Another WorldEmiliaRie TakahashiKayli Mills
Re:Zero − Starting Life in Another WorldPuckYumi UchiyamaErica Mendez
Re:Zero − Starting Life in Another WorldRemInori MinaseBrianna Knickerbocker
Re:Zero − Starting Life in Another WorldRamRie MurakawaRyan Bartley
Re:Zero − Starting Life in Another WorldBeatriceSatomi AraiKira Buckland
Re:Zero − Starting Life in Another WorldRoswaal L. MathersTakehito KoyasuRay Chase
Re:Zero − Starting Life in Another WorldFeltChinatsu AkasakiChristine Marie Cabanos
Re:Zero − Starting Life in Another WorldReinhard van AstreaYuichi NakamuraRobbie Daymond
Re:Zero − Starting Life in Another WorldJulius JuukuliusTakuya EguchiChris Niosi
Re:Zero − Starting Life in Another WorldWilhelm van AstreaKenyu HoriuchiSonny Franks
Re:Zero − Starting Life in Another WorldPetelgeuse Romanee-ContiYoshitsugu MatsuokaTodd Haberkorn
Re:Zero − Starting Life in Another WorldAlec HoshinToshiyuki Morikawa
Re:Zero − Starting Life in Another WorldGarfiel TinzelNobuhiko OkamotoZeno Robinson
Re:Zero − Starting Life in Another WorldOtto SuwenKōhei AmasakiZach Aguilar
The Saga of Tanya the EvilTanya von DegurechaffAoi YūkiMonica Rial
The Saga of Tanya the EvilViktoriya Ivanovna Serebryakov Saori HayamiJeannie Tirado
The Saga of Tanya the EvilMatheus Johann WeissDaiki HamanoDaman Mills
The Saga of Tanya the EvilVooren GrantzYūsuke KobayashiJeff Johnson
The Saga of Tanya the EvilWilibald KoenigJun KasamaChris Wehkamp
The Saga of Tanya the EvilRhiner NeumannDaichi HayashiBen Phillips
The Saga of Tanya the EvilErich von LergenShinichiro MikiJ. Michael Tatum
The Saga of Tanya the EvilKurt von RudersdorfTesshō GendaGreg Dulcie
The Saga of Tanya the EvilHans von ZettourHōchū ŌtsukaMark Stoddard
The Saga of Tanya the EvilAdelheid von SchugelNobuo TobitaCharlie Campbell
The Rising of the Shield HeroNaofumi IwataniKaito IshikawaBilly Kametz
Stephen Fu
The Rising of the Shield HeroRaphtaliaAsami SetoErica Mendez
The Rising of the Shield HeroFiloRina HidakaBrianna Knickerbocker
The Rising of the Shield HeroMotoyasu KitamuraMakoto TakahashiXander Mobus
Cautious Hero: The Hero Is Overpowered but Overly CautiousSeiya RyuuguuinYūichirō UmeharaAnthony Bowling
Cautious Hero: The Hero Is Overpowered but Overly CautiousRistarteAki ToyosakiJamie Marchi
The Eminence in ShadowCid Kagenou Seiichiro YamashitaAdam Gibbs
The Eminence in ShadowAlphaAsami SetoChristina Kelly
The Eminence in ShadowBetaInori MinaseAnnie Wild
The Eminence in ShadowGammaSuzuko MimoriElissa Cuellar
The Eminence in ShadowDeltaAi FairouzRaven Troup
The Eminence in ShadowEpsilonHisako KanemotoEllen Evans
The Eminence in ShadowZetaAyaka AsaiDominique Meyer
The Eminence in ShadowEtaReina KondoGenevieve Simmons
Original charactersPantagruelMinami Tanaka
Original charactersVera MitrohinaNana Mizuki

Production and release

The anime is produced by Studio Puyukai, directed and written by Minoru Ashina, with character designs by Minoru Takehara, who also is chief animation director. The series aired from April 9 to June 25, 2019. Funimation licensed the series and is streaming it in both Japanese and English dubbed. In April 2019, it was added to Crunchyroll's streaming library as well. The opening theme song is "Isekai Quartet", performed by Satoshi Hino, Jun Fukushima, Yūsuke Kobayashi and Aoi Yūki, while the ending theme song is "Isekai Girls Talk", performed by Yumi Hara, Sora Amamiya, Rie Takahashi and Aoi Yūki.
Following the final episode of the first season, a second season was announced, with the staff returning to reprise their respective roles, and aired from January 14 to March 31, 2020. The season includes guest appearances of characters from The Rising of the Shield Hero. The opening theme song is "Isekai Showtime", performed by Hino, Fukushima, Kobayashi and Yūki, while the ending theme song is "Ponkotsu! Isekai Theater", performed by Sumire Uesaka, Rie Takahashi, Inori Minase, and Saori Hayami. Funimation licensed the series for a simuldub. Crunchyroll is also streaming the season. Muse Asia is streaming the season in Southeast Asia.
Following the final episode of the second season, a sequel to the series was announced, which was later confirmed to be an anime film, with returning staff and cast. The film, titled Isekai Quartet: The Movie – Another World, premiered on June 10, 2022. The film's theme song is "Melodic Road Movie", performed by Konomi Suzuki featuring Kashitarō Itō.
A side-scrolling action game, Pixel Game Maker Series Isekai Quartet: Adventure Action Game, was released for Nintendo Switch and Steam on July 17, 2021.
A third season of the anime series was announced on June 13, 2025, and features characters from The Eminence in Shadow, which aired from October 13 to December 22, 2025. The opening theme song is "Isekai Concerto", performed by Hino, Fukushima, Kobayashi and Yūki, the ending theme song is "Kimi Iro, Boku Iro", performed by Suzuki and Itō. Crunchyroll streamed the season and features English voice-over talent from Houston-based Sentai Studios.

Reception

Gadget Tsūshin listed "beautiful Megumin" in their 2019 anime buzzwords list.