That Time I Got Reincarnated as a Slime (Japanese: 転生したらスライムだった件, Hepburn: Tensei Shitara Suraimu Datta Ken) is a titan of the "Isekai" genre, written by Fuse and illustrated by Mitz Vah (Light Novel) and Taiki Kawakami (Manga). It is widely credited with revitalizing the genre by shifting the focus from pure combat to intricate nation-building, diplomacy, and the concept of "monsters" as a civilized society.

The story follows Satoru Mikami, a 37-year-old corporate worker who is stabbed while protecting a colleague. As he dies, his final thoughts are interpreted by a "Great Sage" system, and he is reincarnated in a fantasy world as a Slime, the weakest of monsters. However, he possesses two unique skills: Predator (allowing him to consume anything and mimic its abilities) and Great Sage (an AI-like voice that provides logic and analysis). After befriending and "naming" the Storm Dragon Veldora, he takes the name Rimuru Tempest and begins a journey to build a nation where monsters and humans can coexist in peace.

Alternative Names and Titles

転スラ / TenSura / Slime Isekai / That Time I Got Reincarnated as a Slime