The anime was initially slated to premiere in January 2021, but was delayed due to COVID-19.
“The slime life is fantastic! Slime Diaries, the hugely popular four-panel spin-off comic that has sold over 500,000 copies, is making its debut as the first That Time I Got Reincarnated as a Slime spin-off anime!
“I got hold of some valuable paper, so I’ve decided to write down the experiences I’ve had in diary format.
I’ll start it off with… hmm… ‘I got reincarnated as a slime.’ And that was when my adventure… when my… adventure…” Fun and humorous tales of the everyday lives of Rimuru and his friends in Tempest offer prime reincarnation entertainment, slime-style!
Taking a break from his time as a teacher, the powerful slime Rimuru Tempest returns to his kingdom, eponymously named Tempest, just in time to begin negotiations with a nearby nation—the Kingdom of Eurazania. While the negotiations are anything but peaceful, they do end successfully, allowing Rimuru to return and finish teaching. When trying to again return to Tempest, this time permanently, Rimuru is stopped by a mysterious figure who is somehow able to constrain the many magical abilities he has at his disposal.
In Tempest, the situation is even worse. A group of unknown humans has invaded the land and are assaulting its citizens, both influential and innocent. They are not just trying to bring harm either—they have the intent to kill. Can Rimuru overcome his powerful and dangerous foe and return to Tempest before it is too late?
[Written by MAL Rewrite]
The nation of Tempest is in a festive mood after successfully overcoming the surprise attack from the Blumund Army and the Western Holy Church. Beyond the festivities lies a meeting between Tempest and its allies to decide the future of the Nation of Monsters. The aftermath of the Blumund invasion, Milim Nava’s suspicious behavior, and the disappearance of Demon Lord Carrion—the problems seem to keep on piling up.
Rimuru Tempest, now awakened as a “True Demon Lord,” decides to go on the offensive against Clayman. With the fully revived “Storm Dragon” Veldora, “Ultimate Skill” Raphael, and other powerful comrades, the ruler of the Tempest is confident in taking down his enemies one by one until he can face the man pulling the strings.