That Time I Got Reincarnated as a Slime is a Japanese fantasy light novel series written by Fuse, and illustrated by Mitz Vah. It was serialized online between 2013 and 2016 on the user-generated novel publishing website Shōsetsuka ni Narō. It was acquired by Micro Magazine, who published the first light novel volume in 2014. Twelve volumes have been released as of July 2018. 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 a manga spin-off published by Micro Magazine and an anime television series adaptation by 8-Bit.
An anime television series adaptation aired from October 2, 2018 to March 26, 2019 on Tokyo MX and other channels. The series is animated by 8-Bit and directed by Yasuhito Kikuchi, with Atsushi Nakayama as assistant director, Kazuyuki Fudeyasu handling series composition, Ryouma Ebata designing the characters, and Takahiro Kishida providing monster designs. Elements Garden is composing the series’ music. The first opening theme is “Nameless story” performed by Takuma Terashima, while the first ending theme is “Another colony” performed by True. The second opening theme is “Megurumono”performed by Terashima, while the second ending theme is “Little Soldier” performed by Azusa Tadokoro. The series is simulcast by Crunchyroll with Funimation streaming an English dub as it airs. The series will run for 25 episodes. An original animation DVD was originally scheduled to be released in March 29, 2019, bundled with the 11th manga volume, but it was delayed to December 2019, bundled with the 13th manga volume.
A second season has been announced and is scheduled to air in 2020, with the staff and cast members reprising their roles. 8-Bit will still animate the series.
- Rimuru Tempest / Satoru Mikami
- A human on Earth who was reincarnated as a powerful Slime due to certain requests he made as he died. He has the skill Devour (Predator in the anime), which allows him to eat almost anything and obtain skills and items from the devoured object. He can even mimic the appearance of any item he has devoured. After the defeat of Orc Lord, he established Tempest (Jura Tempest Federation in the anime), a nation of monsters in Great Forest of Jura that seeks co-existence of monsters with other living races.
- Veldora Tempest
- A powerful dragon known as the “Storm Dragon” who befriended the young Rimuru. Veldora was trapped in an “Endless Prison” by a beautiful Hero, when he was distracted by her looks. He was freed by Rimuru, when Rimuru took him into his storage space, so that they could jointly analyze the Endless Prison spell to break it. He was a “Calamity” type monster.
- Shizue Izawa
- Shizue, also known by her nickname Shizu, is a Japanese girl who was summoned into this world, during the Bombing of Tokyo. Her summoning was considered a failure, and she was abandoned after having a fire spirit, Ifrit, bound to her body. Soon after she gained the title “Conquerer of Flames”. She figures out that Rimuru was also once from Japan and in their short time together, they become good friends. After passing away, her body is devoured by Rimuru, giving him a human form.