That Time I Got Reincarnated As A Slime (Japanese: 転生したらスライムだった件, Tensei Shitara Slime Datta Ken) is a Japanese fantasy light novel series written by Fuse Sensei and illustrated by Mitz Vah. The story follows Mikami Satoru, a salaryman who is reincarnated into a slime in a fantasy world after getting murdered by an unknown man. The protagonist awaken as one of the weakest creature imaginable, a slime named Rimuru Tempest. Despite this humble form, he gradually discovers unique abilities that allowed him to absorb skills, adapt to his environment, and grow stronger over time.
As the slime explores the new world, he encounters various races, monsters, and civilizations, forming alliances and influencing the balance of power. What begins as a simple struggle for survival slowlu evolves into an epic journey of growth, leadership, and life-discovery, all from the perspective of a slime.
This series has received anime television adaptaion, produced by EightBit studio which aired from October 2, 2018 to March 19, 2019. The second season of the anime adaptation aired from January to September 2021 and an anime adaptation of the second spin-off manga aired from April to June 2021. An anime film was released in November 2022. A three-episode original net animation spin-off, titled Visions of Coleus was released in November 2023. A third season aired from April to September 2024. A fourth season has been announced, along with a second film, which is set to be released in February 2026.
Plot
Satoru mikami is an ordinary 37 years old salaryman living in Tokyo. During a casual encounter with his colleague, an assailant tries to stab his friend, and Satoru pushes his friend out of the way and gets stabbed instead. He then died and reincarnated to a different, fantasy world as a low level, weak Slime, and also acquired newfound skills. He stumbled upon Veldora, a powerful 'Storm Dragon', who has been sealed for the past 300 years for reducing a town to ashes. Feeling sorry (and lonely) for him, Satoru befriends Veldora, ppromising to help him in destroying the seal. He then consumed the dragon and exchanged names, Veldora bestows upon him the name Rimuru and receives surname Tempest in return. During his journey, Rimuru gain a human form after devouring a deceased human named Shizue Izawa.
The dissapearance of the 'Storm Dragon' Veldora creates a power vacuum, which eventually makes Rimuru the leader of all beings inhabiting the Great Forest of Jura, who accept him as a ruler and together, they establish the nation of Tempest. With Rimuru's strength, wisdom, and idealistic vision, the new nation quickly grows in strength and influence. Soon Rimuru and their subjects draw the attention of nearby foreign powers, from monarchs and legendary heroes to demon lords, some seeking to become their allies, others intending to take advantage of or destroy them completely.
(Source: Wikipedia)