Season 3 of That Time I Got Reincarnated as a Slime is expected in the spring of 2024.

The third television anime season will debut on NTV and its affiliates in the spring of 2024, according to the "grand finale" screening of That Time I Got Reincarnated as a Slime: Scarlet Bond (Tensei Shitara Slime Datta Ken: Guren no Kizuna-hen), the anime film from the That Time I Got Reincarnated as a Slime franchise.

The first cours (quarter of a year) of the second television anime season debuted in January 2021. The Slime Diaries: That Time I Was Reincarnated as a Slime (Tensura Nikki Tensei Shitara Slime Datta Ken), a Shiba spinoff manga, then had its television anime debut on Tokyo MX in April 2021. Following the conclusion of The Slime Diaries, the second season's second course debuted in July 2021, resulting in nine consecutive months of television anime from the franchise in 2021.

The brand-new, original plot for the Scarlet Bond movie was written by Fuse. Raja, a brand-new nation to the west of Tempest, serves as the focal point of the narrative. Rimuru and his friends become embroiled in a protracted plot centred on a woman with a strange power. Together with Hiiro, another ogre survivor who had admired Benimaru, Rimuru and his leader Benimaru come upon Hiiro.

On November 25, the movie had its Japanese premiere. It debuted at #2 and in its first weekend, 225,000 tickets were sold for 297 million yen, or around $2.14 million. On the first three days, 313,000 tickets were sold for 416 million yen, or around $3.19 million.

On January 20, the movie debuted in the US and Canada. In its first three days, it made US$1,588,491. The movie had its world premiere on Crunchyroll on January 18 in the United Kingdom and Ireland, January 19 in Australia, and January 26 in Mexico. Crunchyroll will provide the dates in the future. The movie will also be released in 2023 in the Middle East and other regions.

As part of its 10th anniversary initiative, the franchise will also release a three-episode original animation titled Koriusu no Yume (Coleus's Dream) this autumn.