Isekai Quartet
Original Title：異世界かるてっと
Languages:
- English: Isekai Quartet
- Chinese: 异世界四重奏
- Japanese: 異世界かるてっと
"Isekai Quartet" (Japanese: 異世界かるてっと, Isekai Karutetto) is a Japanese anime series that features a chibi-style crossover between several isekai light novel series published by Kadokawa Corporation. The main characters come from "KonoSuba", "Overlord", "Re:Zero − Starting Life in Another World", and "The Saga of Tanya the Evil". The first season aired from April to June 2019, and the second season aired from January to March 2020, adding characters from "The Rising of the Shield Hero". A film, "Isekai Quartet: The Movie – Another World", was released in 2022. The story revolves around the protagonists from these different isekai worlds who are brought to a new parallel world via a mysterious button, where they begin their high school life. The anime is known for its light-hearted humor and interactions between characters from different series. It is produced by Studio Puyukai, directed and written by Minoru Ashina, with character designs by Minoru Takehara. The anime's opening and ending themes are performed by voice actors from each of the respective series.