‘That Time I Got Reincarnated as a Slime’ Season 4 Episode 18 Release Date and Time
Rimuru Tempest and the growing nation of Tempest are set to return for another chapter of ‘That Time I Got Reincarnated as a Slime’ Season 4, and the countdown to Episode 18 is officially underway. The isekai series has kept a dedicated fanbase glued to its weekly rollout since the season began earlier this year, and the wait for new episodes has become part of the ritual for many viewers.
This installment arrives with a bit more attention than usual, since it follows a stretch of scheduling changes that pushed the back half of the season slightly off its original track. Knowing exactly when and where to watch has become more important for fans who do not want to miss a beat.
When Season 4 Episode 18 Premieres
Episode 18 of ‘That Time I Got Reincarnated as a Slime’ Season 4 is scheduled to premiere on August 14, 2026, according to TVmaze’s episode guide for the series. That places the new chapter a week after Episode 17, titled ‘Lubelius, the Point of Convergence,’ which aired on August 7, 2026.
The Episode 17 airdate itself was the product of a delay, since the installment had originally been planned for July 31 before being pushed back. That shift, confirmed through the series’ official channels, effectively moved the entire back portion of the summer schedule, including Episode 18, into its current slot.
This was not the first scheduling disruption of the season. Episode 5 had also been postponed earlier in the year, moving from an original May 1 date to May 8, due to programming changes tied to Japan’s Golden Week holiday period. A special recap episode aired in its place at the time.
For a series airing on a five cour plan spanning roughly 15 months, occasional shifts like these have become part of the territory, even as the weekly rhythm has otherwise held steady for most of the run.
Crunchyroll Streaming Time for International Viewers
For viewers outside Japan, new episodes of ‘That Time I Got Reincarnated as a Slime’ Season 4 continue to release on Fridays at 7 a.m. PT and 10 a.m. ET on Crunchyroll. That timing has remained consistent throughout the season, even as the Japanese broadcast experienced its recent one week bump.
Episodes are made available with both English subtitles and an English dub at the same time, which has made the season easier to follow for viewers regardless of their preferred format. Crunchyroll carries the series across a wide swath of the globe, including North America, Central and South America, Europe, Africa, Oceania, the Middle East, the CIS region and Southeast Asia.
In Japan, the anime continues to air on NTV’s Friday Anime Night programming block, the same slot that has hosted the series since Season 4 began. The consistency of the international release window has helped offset some of the confusion caused by the domestic delays.
What Episode 18 Follows in the Season 4 Story
Episode 17, ‘Lubelius, the Point of Convergence,’ picked up the season’s ongoing thread involving the Holy Empire of Lubelius, a setting that has been building toward a major convergence point for the story’s key players. The episode marked the eighty ninth installment of the anime overall and the seventeenth of the fourth season.
Season 4 as a whole follows Demon Lord Rimuru’s continued effort to forge an alliance between humans and monsters, even as that vision runs into resistance. Granville Rozzo and his granddaughter Maribel Rozzo clash with Rimuru over their own plan to protect humanity by ruling over it instead of coexisting with monsters, according to Crunchyroll’s official season overview.
Meanwhile, in the separate territory of El Dorado, Demon Lord Leon continues working toward goals of his own, a subplot that has been running in parallel with the main Tempest storyline. The season’s official synopsis also teases the approaching awakening of a new Hero, a development that has not yet been fully explored on screen.
Season 4 premiered on April 3, 2026, and was designed from the outset as the longest run in the franchise’s history, with five total cours planned across the coming months. The first two cours are airing back to back without a scheduled break, and the total episode count is expected to climb past 60 by the time the full season wraps.
Where the Series Stands in Its Broader Run
‘That Time I Got Reincarnated as a Slime’ has built its reputation over three previous seasons on detailed world building and political storytelling rather than pure spectacle, and Season 4 has largely continued that approach. The series follows Mikami Satoru, a man reincarnated in another world as a slime named Rimuru, who works to build a nation where humans and monsters can coexist.
The franchise’s expansion has continued alongside the anime itself, with a second film, ‘Tears of the Azure Sea,’ having released on February 27, 2026, shortly before Season 4 began. Studio Eight Bit remains behind the production, continuing its work from the previous three seasons.
With Episode 19 already dated for August 21 and Episode 20 following on August 28, the season’s Friday rhythm appears set to hold for the immediate future, barring any further adjustments from the Japanese broadcast side. For a series juggling multiple political fronts across Tempest, Lubelius and El Dorado, the coming episodes carry real weight for where the season’s central conflicts are headed.
What are you hoping Episode 18 finally addresses, the standoff with the Rozzos, Leon’s plans in El Dorado, or the long teased arrival of the new Hero?
