‘That Time I Got Reincarnated as a Slime’ Season 4 Episode 18 Release Date and Time

Rimuru Tempest is back in action, and the wait for the next chapter of ‘That Time I Got Reincarnated as a Slime’ Season 4 is almost over. The isekai favorite has become one of the most closely watched anime of the year, and Episode 18 is set to keep the momentum rolling with a new dose of political intrigue and monster diplomacy.

For fans tracking the schedule closely, this is the episode that follows a recent scheduling shakeup, so knowing the exact release window matters more than ever this time around.

‘That Time I Got Reincarnated as a Slime’ Season 4 Episode 18 Release Date and Time

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 it a week after Episode 17, which aired on August 7, 2026, following a delay from its originally planned July 31st slot.

The shift happened because the official website for the series confirmed that Episode 17 would not air as scheduled, with the broadcast pushed back due to programming changes in Japan, as reported by ComicBook.com. That change effectively nudged the entire back half of the summer lineup, including Episode 18, into its current slot.

For international viewers, new episodes of ‘That Time I Got Reincarnated as a Slime’ Season 4 release on Fridays at 7 a.m. PT and 10 a.m. ET, according to Final Weapon. That timing has stayed consistent across the season’s Crunchyroll rollout, even with the recent one week bump in the Japanese broadcast.

Episodes continue to arrive with both English subtitles and an English dub, per Final Weapon, which has made the season easy to binge for viewers who prefer either format without waiting on a separate dub release later.

Where to Watch the New Episodes?

Crunchyroll remains the home for ‘That Time I Got Reincarnated as a Slime’ Season 4 across a huge swath of the globe. The platform is streaming the season in North America, Central America, South America, Europe, Africa, Oceania, the Middle East, the CIS region and Southeast Asia, according to Final Weapon.

In Japan, the anime airs on NTV as part of its Friday Anime Night programming block, the same outlet notes. That block has become something of a proving ground for high profile anime releases, and ‘Slime’ has fit right into that lineup since the season began airing on April 3, 2026, per Wikipedia’s season overview.

Prime Video has also been carrying episode synopses for the season, giving viewers another checkpoint to follow along with the story beyond Crunchyroll’s simulcast.

Season 4 Plot and the Growing Council Conspiracy

Season 4 finds Rimuru further along in his mission to build a lasting alliance between humans and monsters, and the stakes keep climbing. According to Crunchyroll’s official season description via Final Weapon, Demon Lord Rimuru’s dream of that alliance takes a step closer to being realized even as Granville Rozzo and his granddaughter Maribel Rozzo clash with him over their own plan to protect mankind by ruling over it.

Meanwhile, in El Dorado, Demon Lord Leon is working toward goals of his own, and the season’s overview teases that the awakening of a new Hero draws near, per Final Weapon.

The most recent run of episodes has leaned hard into political maneuvering. According to Prime Video’s episode descriptions, a list of unreasonable demands from the Council makes Rimuru realize that a deeper plot is in motion, and an interrogation of Prince Elric’s would be shooter reveals who has been pulling the strings behind the Council.

That thread continues to unravel in subsequent episodes, with Prime Video’s synopses noting that Glenda reveals what she knows about the Council and the Rozzos, while Rimuru prepares to inspect the ancient ruins connected to the conspiracy. Another entry in the same batch of descriptions confirms that the investigation of the ancient ruins of Amrita gets underway, setting up a face to face meeting between Rimuru and Mirabel inside those very ruins.

A Season Built for the Long Haul

This is shaping up to be the most ambitious run in the franchise’s history. ‘That Time I Got Reincarnated as a Slime’ Season 4 is planned across five full cours of episodes stretching over the next couple of years, according to ComicBook.com, with only the first two cours locked into a release date as of the season’s premiere, per Wikipedia.

That scale explains why the pacing has room to breathe, with the Founder’s Festival and ongoing Council intrigue getting the kind of sustained attention a shorter season simply could not afford, according to AnimeOshi’s breakdown of the season’s early episodes.

With Veldora causing chaos, Benimaru itching for a fight, and Rimuru trying to hold everything together with his trademark composure, the show’s central cast continues to carry the balance between nation building politics and combat that has defined the series since its debut, per AnimeOshi.

How do you think the standoff between Rimuru and the Rozzos is going to play out once the truth about the Council fully comes to light?