That Time I Got Reincarnated as a Slime (Japanese: 転生したらスライムだった件, Hepburn: Tensei Shitara Suraimu Datta Ken), also known as Regarding Reincarnated to Slime[b] and by the contraction TenSura (転スラ), is a Japanese fantasy light novel series written by Fuse [ja], and illustrated by Mitz Vah. The story follows Satoru Mikami, a salaryman who is murdered and then reincarnated in a sword and sorcery world as the titular slime, who goes on to gather allies to build their own nation of monsters.
It was serialized online from 2013 to 2016 on the user-generated novel publishing website Shōsetsuka ni Narō. It was later acquired by Micro Magazine, which published the first light novel volume in 2014. Twenty-one volumes have been released as of October 2023. The light novel has been licensed in North America by Yen Press, who published the first volume in December 2017. It has received a manga adaptation published by Kodansha along with five manga spin-offs published, respectively, by Micro Magazine and Kodansha, and an anime television series adaptation produced by Eight Bit, which aired from October 2018 to March 2019. A second season of the anime series aired from January to September 2021, and an anime adaptation of the second spin-off manga aired from April to June 2021. An anime film was released in November 2022. A three-episode original net animation spin-off titled Visions of Coleus was released in November 2023. A third season aired from April to September 2024. A fourth season has been announced, along with a second film.
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^第5回 清水恵蔵(キャラクターデザイン・総作画監督)「1994年 第3期制作時インタビューより抜粋」 [5th Interview, Keizou Shimizu (Character Designer and Chief Animation Director) - Excerpt from 3rd Series Production Interview, 1994]. Legend of the Galactic Heroes. Retrieved November 7, 2021.
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