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.
Taiki Kawakami launched a manga adaptation in Kodansha’s shōnen manga magazine Monthly Shōnen Sirius on March 26, 2015. Kodansha USA announced their license to the manga during their panel at New York Comic Con on October 6, 2016. A second manga, titled That Time I Got Reincarnated as a Slime: How Monsters Walk, with art by Shō Okagiri, has been serialized on Micro Magazine’s Comic Ride website since July 28, 2016. A spin-off manga titled Tensei Shitara Shachiku Datta Ken illustrated by Shizuku Akechi has been announced.
Satoru Mikami, an average 37 year old office worker from Tokyo with no girlfriend, was asked for marriage advice by Tamura. After meeting him and his partner Miho on the street, he is stabbed to death by a passing robber (incredibly brutal death). After making some requests during his death, He is reincarnated in another world as a slime with the ability known as predator (which can devour other creatures and obtain their abilities). Upon making friends with the dragon Veldora, the slime, now known as Rimuru Tempest, embarks on a journey to find a way to free Veldora from his seal, encountering many different races along the way (along with enmbarking on side quests throughout the story).