Tensei Shitara Slime Datta Ken is a Japanese novel by Fuse. The abbreviated name is "Tousura". The web novel that was serialized on the novel posting site "Let's become a novelist" from February 20, 2013 has been significantly revised as a general plot, and has been published by GC Novels (Micro Magazine) since May 2014. In addition, media mixes such as manga based on this work, Gaiden manga, and animation based on the manga version are being developed.