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That Time I Got Reincarnated As A Slime Season 3 - What We Know So Far

The popular and fun isekai anime series "That Time I Got Reincarnated as a Slime" (Tensei Shitara Slime Datta Ken) just completed its initial Season 2 run, meaning it now has 36 episodes under its belt. But if you're waiting for information regarding a third season of the series now, you're going to have to wait — most likely until the current season is completed, at least. 

The show, about a 37-year-old man who is stabbed and reincarnated in a fantasy world as a slime with different abilities is based on a light novel. It was adapted into an anime starting in 2018, though its darker, morally ambiguous second season was delayed because of the COVID-19 pandemic. It is now airing in a specific format, splitting the seasons into a pair of three-month segments. This way, fans aren't actually waiting on the third season; they're waiting on the last 12 episodes of the second. Here's what we know right now about the upcoming episodes of "That Time I Got Reincarnated as a Slime."

When will That Time I Got Reincarnated as a Slime Season 3 be released?

Season 2 of "That Time I Got Reincarnated As a Slime" ended in September 2021, and since then, we've been waiting expectantly for announcement of a third season. Well, during an early screening of the film "That Time I Got Reincarnated as a Slime: Scarlet Bond" (which hits Japanese theaters on November 25 and will make its worldwide premiere via Crunchyroll sometime in 2023), it was announced that a third season was officially in the works.

The announcement was accompanied by a visual (via Crunchyroll) showing hero Rimuru facing off against Hinata Sakaguchi of the Ten Great Saints. However, there's still no word on when we can expect to see Season 3. In the meantime, there's a 12-episode spinoff called "The Slime Diaries." You can catch it on Crunchyroll if you're inclined to a bit of comedic fluff, set mid-way through the first season, that doesn't have any bearing on the developing narrative of the main show. There are also five OVAs/OADs, or original video animations (originally on DVD), available to watch until the next season starts. 

What is the plot of That Time I Got Reincarnated as a Slime Season 3?

"That Time I Got Reincarnated as a Slime" is based on a series of light novels, which are targeted toward young adults. This series is written by Fuse and illustrated by Mitz Vah. That series is now up to Volume 17, although the English volumes are a bit behind. There's also a web novel series, which has concluded. So far, the anime hasn't covered more than five volumes — it slowed down the rate of adaptation to focus on characterization and world-building (via Monsters & Critics).

By the end of Season 2, Part 1, Rimuri has become a Demon Lord and his subordinate citizens have all transformed into an immortal army, while Demon Lord Milim Nava has destroyed the Beast Kingdom Eurazania, and Demon Lord Frey has killed Demon Lord Carrion. Rimuri learns that Claymen might be behind the attack, renames demon Noir as Diablo, and also frees Veldora, who gets a new body that the storm dragon changes. 

In Part 2, fans see the events of Volume 6 onward including fallout from the invasion of Tempest, Veldora's freedom, the purported death of Carrion, and in Rimuri's decision to become a Demon Lord without the other Demon Lords' permission.

Who's in the cast of That Time I Got Reincarnated as a Slime Season 3?

The cast from "That Time I Got Reincarnated as a Slime" remained on board for Seasons 1 and 2, although there was a directorial change between the two seasons — Atsushi Nakayama replaced Yasuhito Kikuchi from Season 1. Voice talent remained the same throughout Part 2 of Season 2. 

Japanese voice talent in the previous seasons include Miho Okasaki as slime Rimuru, Megumi Toyoguchi as Great Sage, Chikahiro Kobayashi as wolfish Ranga, Asuna Tomari as hobgoblin Gobta, Mao Ichimichi as ogress Shion, and Kanehira Yamamoto as goblin leader Rigurd. The actors tapped for the English dub of the show include Brittney Karbowski as Rimuru, Mallorie Rodak as Great Sage, Tyson Rinehart as Ranga, Ryan Reynolds as Gobta, Michelle Rojas as Shion, and Kent Williams as Rigurd.