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That Time I Got Reincarnated as a Slime Novels End in 23rd Volume

The official X (formerly Twitter) account of Micro Magazine's GC Novels label revealed on Monday that author Fuse and artist Mitz Vah's That Time I Got Reincarnated as a Slime (Tensei Shitara Slime Datta Ken) light novel series will end in its 23rd volume, which will ship in Japan on November 29. GC Novels revealed the final volume's cover illustration:

Additionally, GC Novels announced that it will also publish the Tensei Shitara Slime Datta Ken: Toaru Kyūka no Sugoshi-kata (That Time I Got Reincarnated as a Slime: How to Spend a Certain Vacation) spinoff story on November 29, and also revealed its cover illustration:

Fuse serialized the That Time I Got Reincarnated as a Slime story on the "Shōsetsuka ni Narō" (Let's Become Novelists) website from 2013 to 2016, and the series has since garnered over 400 million page views. Micro Magazine began publishing the series in print with illustration by Mitz Vah in 2014. Yen Press releases the novel series.

Fuse stated in the light novels' 22nd volume in January that he would like to end the novel series sometime this year.

The first television anime of Taiki Kawakami's manga, itself an adaptation of Fuse and Mitz Vah's light novel series, premiered in October 2018. Crunchyroll streamed the anime, and FUNimation Entertainment streamed an English dub.

The second television anime season premiered its first cours (quarter of a year) in January 2021. The television anime of Shiba's spinoff manga The Slime Diaries: That Time I Got Reincarnated as a Slime (Tensura Nikki Tensei Shitara Slime Datta Ken) then premiered on Tokyo MX in April 2021. After The Slime Diaries ended, the second cours of the second season began in July 2021 — for nine straight months of television anime from the franchise in 2021.

The That Time I Got Reincarnated as a Slime: Scarlet Bond film opened in Japan in November 2022.

The three-episode That Time I Got Reincarnated as a Slime: Coleus' Dream anime debuted in Japan in November 2023 with all three episodes. Crunchyroll is streaming the anime with subtitles and an English dub.

The anime's third season premiered in April 2024. The show aired for two continuous cours for a half-year run. The anime has a fourth season planned, and the second anime film Gekijō-ban Tensei Shitara Slime Datta Ken: Sōkai no Namida-hen (That Time I Got Reincarnated as a Slime the Movie: Tears of the Blue Sea Arc) will open in Japan on February 27, 2026.

Fuse published the Tensei Shitara Slime Datta Ken: Toaru Kyūka no Sugoshi-kata spinoff story on the Shōsetsuka ni Narō website in 2023, to celebrate the original light novels' 10th anniversary. Yuzo Takada launched a manga adaptation of the spinoff story in Kodansha's Monthly Shonen Sirius magazine in July 2023, and it ended on May 26. 

Source: GC Novels' X/Twitter account (link 2)