Isekai Quartet

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Isekai Quartet
Isekai Quartet promo art.jpg
Promotional art for the series featuring (clockwise from left) Ainz Ooal Gown, Albedo, Subaru Natsuki, Emilia, Aqua, Tanya von Degurechaff, Kazuma Satō, and Viktoriya Ivanovna Serebryakov.
(Isekai Karutetto)
GenreIsekai,[1] comedy[2]
Anime television series
Directed byMinoru Ashina
Written byMinoru Ashina
Music byRuka Kawada
StudioStudio Puyukai
Licensed byFunimation
Original networkTokyo MX, MBS, BS11, AT-X, TVA
Original run April 9, 2019 – present
Episodes12 (List of episodes)
Wikipe-tan face.svg Anime and Manga portal

Isekai Quartet (Japanese: 異世界かるてっと, Hepburn: Isekai Karutetto) 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.


One day, a magic button suddenly appears. The protagonists in KonoSuba, Overlord, Re:Zero − Starting Life in Another World, and The Saga of Tanya the Evil all press the button and move to a parallel world — another brand new isekai — where a new story featuring high school life begins.


Series Character Japanese[3][4] English[5]
Overlord Ainz Ooal Gown Satoshi Hino Chris Guerrero
Albedo Yumi Hara Elizabeth Maxwell
Shalltear Bloodfallen Sumire Uesaka Felecia Angelle
Aura Bella Fiora Emiri Katō Jill Harris
Mare Bello Fiore Yumi Uchiyama Megan Shipman
Demiurge Masayuki Katō Jeff Johnson
Cocytus Kenta Miyake Bryan Massey
KonoSuba Kazuma Satou Jun Fukushima Arnie Pantoja
Aqua Sora Amamiya Faye Mata
Megumin Rie Takahashi Erica Mendez
Darkness Ai Kayano Cristina Vee
Re:Zero − Starting Life in Another World Subaru Natsuki Yūsuke Kobayashi Sean Chiplock
Emilia Rie Takahashi Kayli Mills
Puck Yumi Uchiyama Erica Mendez
Rem Inori Minase Brianna Knickerbocker
Ram Rie Murakawa Ryan Bartley
Beatrice Satomi Arai Kira Buckland
Roswaal L. Mathers Takehito Koyasu Ray Chase
The Saga of Tanya the Evil Tanya von Degurechaff Aoi Yūki Monica Rial
Viktoriya Ivanovna Serebryakov (Visha) Saori Hayami Jeannie Tirado
Matheus Johann Weiss Daiki Hamano Daman Mills
Vooren Grantz Yūsuke Kobayashi Jeff Johnson
Wilibald Koenig Jun Kasama Chris Wehkamp
Rhiner Neumann Daichi Hayashi Ben Phillips
Erich von Rerugen Shinichiro Miki J. Michael Tatum
Kurt von Rudersdorf Tesshō Genda Greg Dulcie
Hans von Zettour Hōchū Ōtsuka Mark Stoddard

Production and release[edit]

The anime logo of Isekai Quartet.

The series is written and directed by Minoru Ashina, with character designs by Minoru Takehara, who also serves as chief animation director. The series is animated by Studio Puyukai. It premiered on April 9, 2019.[1][6] The series is listed for 12 episodes.[7] Funimation has licensed the series and is streaming it in both Japanese and English.[8] On April 23, 2019, it was added to Crunchyroll's streaming library as well.[9] Satoshi Hino, Jun Fukushima, Yūsuke Kobayashi and Aoi Yūki perform the opening theme song "Isekai Quartet" (異世界かるてっと, Isekai Karutetto), while Yumi Hara, Sora Amamiya, Rie Takahashi and Aoi Yūki perform the ending theme song "Isekai Girls Talk" (異世界ガールズ♡トーク, Isekai gāruzu tōku).[10]

Episode list[edit]

No. Title[11] Original air date[12]
1"Come Together! Quartet"
Transcription: "Shūketsu! Karutetto" (Japanese: 集結!かるてっと)
April 9, 2019
In the KonoSuba world, Satou Kazuma’s party comes across a big red button. Meanwhile in the Overlord world inside the Great Tomb of Nazarick, Ainz Ooal Gown receives reports from Floor Guardian Demiurge of strange red buttons randomly appearing throughout Nazarick. Megumin intentionally pushes the button and soon Ainz follows by setting theirs off as a result of accidentally sitting on one that suddenly appeared on his throne. Both series' casts are sent to another world featuring a school. They soon learn they are not alone in the new world as the cast of The Saga of Tanya the Evil were also sent to the world as a result of Tanya von Degurechaff pushing two buttons during the upgraded Elenium Type-97 experiment. Soon the cast of Re:Zero joins them inside the school as Kurt von Rudersdorf takes on the role of school principal.
2"Tension! Introductions"
Transcription: "Kinpaku! Jiko Shōkai" (Japanese: 緊迫!じこしょうかい)
April 16, 2019
Roswaal L. Mathers takes position as one of the school teachers and introduces the "school life" rules for the students. The students are then allowed to introduce themselves to their class peers. Later after school is over, Ainz and his Floor Guardians walk on a sidewalk when they are confronted by Aqua, who explains that she cannot allow the undead to continue and attempts to use her magic to vanquish them. She fails and is immediately hit on the head by Kazuma, who proceeds to apologize to Ainz and drag Aqua away. The next day, Aqua is punished by Roswaal for trying to start a fight with her fellow students.
3"Deadlock! Classmates"
Transcription: "Kōchaku! Kurasumeito" (Japanese: 膠着!くらすめいと)
April 23, 2019
After Roswaal tells to the class not to do anything to that threatens their school life, Demiurge explains to the class that his belief is if they try and break any rules of school life, they would be hindering their opportunity to return to their respective worlds. The class is then presented with a talent show that'll happen in the upcoming days, where Subaru explains to his series' cast during lunch that he has a good talent planned. Meanwhile, Tanya is eating lunch with Viktoriya Ivanovna Serebryakov outside when she notices Ainz and starts to suspect he might be the accursed "Being X". When class resumes, she confronts him and demands that he meets her outside of class in park after school, which angers Albedo. The two instead agree to discuss the matter now at the park while Albedo is forced by another teacher, Erich von Rerugen, to remain in class.
4"Encounter! Classmates"
Transcription: "Kaikō! Kurasumeito" (Japanese: 邂逅!くらすめいと)
April 30, 2019
Tanya and Ainz discover in the park that they are both humans that have been sent to other worlds. As the two get to know each other better, Viktoriya arrives after class to retrieve Tanya and leave. Albedo, who spied on the two talking before they departed, becomes infuriated. The next day, Subaru and Kazuma are respectively carried by the much faster Rem and Darkness as to avoid being late to class. After seeing that they both had the same idea, both ask to be dropped but are consequently late for school, while Rem and Darkness arrive just in time. Subaru and Kazuma are punished and discover that they both have been transported to another world based on the fact that they have Japanese names. The two talk on the school roof and Kazuma becomes jealous when he finds out Subaru is surrounded with girls that are actually useful, unlike his party. Kazuma vows to become his enemy as a result.
5"Explosion! Talent Show"
Transcription: "Sakuretsu! Konshinkai" (Japanese: 炸裂!こんしんかい)
May 7, 2019
6"Decision! Class Rep"
Transcription: "Kettei! Iīnkai" (Japanese: 決定!いいんかい)
May 14, 2019
7"Carry Out! Class Rep"
Transcription: "Suikō! Iīnkai" (Japanese: 遂行!いいんかい)
May 21, 2019


  1. ^ a b Hodgkins, Crystalyn (October 6, 2018). "New Isekai Quartet Anime Project Crosses Over Overlord, Re:Zero, Tanya, Konosuba Franchises". Anime News Network. Retrieved October 6, 2018.
  2. ^ "The Spring 2019 Anime Preview Guide Isekai Quartet". Anime News Network. April 9, 2019. Retrieved April 18, 2019.
  3. ^ "「異世界かるてっと」27キャラが学園に集合!リレーPV「幼女戦記」版も公開". コミックナタリー (in Jananese). ナターシャ. Retrieved March 8, 2019.CS1 maint: Unrecognized language (link)
  4. ^ "STAFF&CAST". TVアニメ「異世界かるてっと」オフィシャルサイト (in Jananese). Retrieved March 8, 2019.CS1 maint: Unrecognized language (link)
  5. ^ Funimation. "[Master Thread] ISEKAI QUARTET (Dubbed)". Retrieved 2019-05-01.
  6. ^ Hodgkins, Crystalyn (March 8, 2019). "Isekai Quartet TV Anime Premieres on April 9". Anime News Network. Retrieved March 8, 2019.
  7. ^ Hodgkins, Crystalyn (March 22, 2019). "Isekai Quartet Anime's Promo Video, 2 Ads Streamed". Anime News Network. Retrieved March 22, 2019.
  8. ^ "Funimation to Stream Isekai Quartet, New Strike Witches, Helpful Fox Senko-san, Wise Man's Grandchild Anime". Anime News Network. April 8, 2019. Retrieved April 9, 2019.
  9. ^ "Crunchyroll Introduces ISEKAI QUARTET Anime to Spring 2019 Lineup". Crunchyroll. April 23, 2019. Retrieved April 23, 2019.
  10. ^ "Products". Retrieved April 10, 2019.
  11. ^ "Introduction". (in Japanese). Retrieved April 10, 2019.
  12. ^ "On Air". (in Japanese). Retrieved April 13, 2019.

External links[edit]