Ramiris‘s Warning official promotional art” />Rimuru says Youm should be Falmuth’s new king, Gazel pressure-tests the adventurer, Elalude decides he likes a slime who wants people to smile, and Ramiris arrives with a warning that the demon-lord board is already moving. The fairy is not here for a golem rematch.
Previous: Season 2 Episode 14 — A Meeting of Humans and Monsters · Hub: That Time I Got Reincarnated as a Slime
Hook
Rimuru says Youm should be Falmuth’s new king, Gazel pressure-tests the adventurer, Elalude decides he likes a slime who wants people to smile, and Ramiris arrives with a warning that the demon-lord board is already moving. The fairy is not here for a golem rematch.
This page is the sequential stop after Episode 14 — not a random recap dump. Scores below are for this 24 minutes only.
Quick Information
- Anime: That Time I Got Reincarnated as a Slime
- Season / Episode: Season 2, Episode 15 (overall #39)
- English title: Ramiris‘s Warning
- Japanese episode title: ラミリスの報せ
- Runtime: ~24 minutes
- Studio: 8bit
- Original air date: July 20, 2021
- Kagex score: 8.4 / 10
- Where to watch legally: Crunchyroll (region-dependent)

Should You Watch It?
Watch it. Youm’s king track and Ramiris’s warning are both load-bearing for the rest of the cour. Skip it and Walpurgis plus the Falmuth occupation have missing memos. Still a meeting episode, but with a stamp and a fairy. Sequential. If 38 felt like vegetables, this is vegetables with a decision.
Beginner-friendly? No as a start point. Watch from Season 1 Episode 1. This installment assumes you already know Tempest’s core cast — Rimuru at minimum.
Bottom line: sequential viewers should not skip “Ramiris‘s Warning.” Fight-only watchers may feel the talkier stretches; nation-building fans will not.
Spoiler Warning
Spoilers for Season 2 Episode 15 (“Ramiris‘s Warning”) follow. Stop above for a clean first watch. This page does not spoil later episodes.
Story Recap
A crown for the fake champion
Rimuru pitches Youm as Falmuth’s next king: a human face, an adventurer the West can look at, a man already famous for a lie Rimuru wrote. The propaganda of Season 1 becomes a succession plan. It is cynical and kind. Cynical because the West needs a human. Kind because Youm is decent and Falmuth’s people need not to be a graveyard with no government.
Myulan and Grucius sit in that pitch like landmines and support beams. The romance subplot is now court politics. Youm saying yes is a different job than playing champion on the road.
Pitches Youm as Falmuth’s next king: human face, adventurer the West can look at, already famous for a lie Rimuru wrote. Season 1 propaganda becomes a succession plan. Cynical and kind.
Gazel’s test, answered without a speech
Gazel Dwargo tests Youm the way kings test pretenders: not “are you strong” but “will you flinch.” Youm answers with sincerity instead of a build. That is the correct exam for a puppet who must not only be a puppet. Gazel’s approval is not warmth. It is a professional nod. Dwargon will not sabotage the installation if the man can hold a room.
Rimuru watching his friend get king-interviewed is the weird product of nation-building. He wanted a party member. He is manufacturing a monarch. The episode lets that be uncomfortable and still the best bad idea on the table.
Gazel tests Youm the way kings test pretenders: not are you strong, will you flinch. Youm answers with sincerity instead of a build.
Elalude hears “smiles” and files a friend
Archduke Elalude takes a liking when Rimuru talks about a world where people can prosper and smile — the uncool sentence, the one that sounds like a children’s book after Megiddo. Coming from a demon lord who just ran a solar massacre, it reads as either a lie or a thesis. Elalude chooses thesis, or chooses to test the thesis by not walking out. Thalion’s chair scoots an inch toward Tempest.
Ellen’s father liking the slime is a political event dressed as a vibe. Sorcerous dynasties do not vibe without math. The math is: this monster wants trade, not a second Falmuth, and he already has Veldora. Align or be downstream.
Elalude takes a liking when Rimuru talks about a world where people can prosper and smile — uncool sentence, children’s book after Megiddo.
Ramiris did not come for cake
Ramiris — labyrinth landlord, spirit warden, tiny demon lord — shows up with a warning, not a golem. The demon-lord social graph is moving. Walpurgis-shaped weather. Clayman-shaped weather. A fairy who treated Rimuru as a trespasser in her dungeon is now treating him as a colleague who might die of ignorance.
Her warning is the title. It reclassifies the summit from “human paperwork” to “you are late for a banquet of calamities.” Treyni’s orbit, Beretta, the Dwelling — all of that old Academy kit is suddenly foreign-service kit. Rimuru’s kid-saving fairy is a Ten Great piece. She always was. The meeting finally has to notice.
Ramiris — labyrinth landlord, spirit warden, tiny demon lord — shows up with a warning, not a golem. Demon-lord social graph moving.
Allies looking at Clayman, together
The hour ends with a clearer coalition: Youm toward a throne, Gazel not blocking, Elalude not storming out, Ramiris saying the quiet part about the demon-lord table. Clayman is the named next enemy in a way even the visitors can file. The congress will dance. This is the rehearsal ending on a fairy’s alarm.
Rimuru wanted smiles. He is going to a banquet. Those two sentences are the rest of the cour. Ramiris did not come to be cute. She came because cute things die at Walpurgis if nobody briefs them.
Clearer coalition: Youm toward a throne, Gazel not blocking, Elalude not storming out, Ramiris saying the quiet part about the demon-lord table. Clayman named next enemy in a way even visitors can file. Congress will dance.

Story Analysis
Episode 39 is the decision-stamp council episode, which is why it is better than 38. Youm-for-king is the human-world solution to Megiddo. Gazel’s test is character. Elalude’s smile-thesis is the show daring to say the theme out loud after a war crime. Ramiris’s warning is the genre shift back toward demon-lord myth. Four beats, one hour, all load-bearing.
Pacing still talky but with arrivals and stamps. Comedy is Ramiris and Youm sweating a king interview. World-building: puppet succession as peace tech, tiny demon lords as intelligence sources, Thalion’s alignment. Required. The last meeting episode that still feels like it adds a new machine to the board rather than idling.
Decision-stamp council, better than 38 because things lock. Youm-for-king is the human-world solution to Megiddo. Gazel’s test is character. Elalude’s smile-thesis dares to say the theme out loud after a war crime. Ramiris’s warning is the genre shift back toward demon-lord myth. Four beats, one hour, all load-bearing. Still talky but with arrivals and stamps. Ramiris and Youm-sweating comedy. Puppet succession as peace tech, tiny demon lords as intel, Thalion’s alignment. Required. Last meeting that adds a machine rather than idling. Youm’s crown is Season 1 propaganda promoted to statecraft. Filing smiles as policy is the bloc deciding he has a thesis, not only a beam. Ramiris briefing is the Academy fairy joining the workplace. Finally a stamp. Analysis is four locks. King, nod, inch, siren. Then the dance can start. Before that, the table had to mean something. This hour makes it mean something.
Character Analysis
Youm as a man being offered a country. Gazel as examiner. Elalude as the convert-in-progress. Ramiris as the alarm. Rimuru as headhunter and thesis-speaker. Myulan/Grucius as Youm’s dangerous cabinet-to-be.
Fuze still doing small-kingdom math. Shion as the smile Rimuru wants more of. Diablo listening to king-making like it is theater. Clayman as the deadline. Ramiris stealing the title is correct. Youm sweating is the human heart. Gazel nodding is the plot lock.
Youm a man being offered a country. Gazel examiner. Elalude convert-in-progress. Ramiris the alarm. Rimuru headhunter and thesis-speaker. Myulan/Grucius Youm’s dangerous cabinet-to-be. Fuze still small-kingdom math. Shion the smile Rimuru wants more of. Diablo listening to king-making like theater. Clayman the deadline. Ramiris stealing the title is correct. Youm sweating is the human heart. Gazel nodding is the plot lock. Four stamps as four characters doing jobs. Sincerity as Youm’s only build. Uncool sentence as Rimuru’s only build that matters to Elalude. Tiny siren as Ramiris’s job. Professional nod as Gazel’s. Dual MVPs: sweating adventurer and briefing fairy. Kings as the lock and the inch.
Ramiris is not comic relief this hour. She is the warning system. Treyni is the forest’s lawyer. Rimuru is the man who has to hear that Walpurgis is not optional.

World Building
Installing a king as a postwar technology. Adventurer-to-monarch as a story the West can swallow. Demon-lord intelligence arriving via fairy instead of spies. Walpurgis as a scheduled storm Ramiris can smell. Thalion as a possible magical-human ally.
Smiles as a stated policy of a demon lord — a propaganda line and a true north, stacked. Ramiris crossing from dungeon warden to political briefer. The Ten Great are a workplace. Tempest just got the memo in a tiny voice.
Installing a king as a postwar technology. Adventurer-to-monarch as a story the West can swallow. Demon-lord intelligence arriving via fairy instead of spies. Walpurgis as a scheduled storm Ramiris can smell. Thalion as a possible magical-human ally. Smiles as stated policy of a demon lord — propaganda line and true north, stacked. Ramiris crossing from dungeon warden to political briefer. Ten Great are a workplace. Tempest just got the memo in a tiny voice. Propaganda promoted to statecraft.
Nothing here is later-arc homework. If a name or rule is only teased, it stays a tease.
Animation
King-test blocking, Ramiris arrival (tiny body, big news), council faces. 8bit’s fairy animation is still bouncy against grim politics, which is the point. No battle. The visual joke is a fairy briefing kings. It works. Youm’s sincerity is acted clearly enough. Fine, clear, a little static in the middle, saved by the warning.
King-test blocking, Ramiris arrival (tiny body, big news), council faces. Fairy animation still bouncy against grim politics, which is the point. No battle. Visual joke is a fairy briefing kings. It works.
Kagex animation score for this episode: 8.1 / 10 — peaks vs average cuts, not a sakuga clip ranking.
Music and Voice Acting
Score 8.2. 8bit’s TV mix leans on Elements Garden sting + silence. Japanese track is the reference for Rimuru’s dual register (cute slime vs office-brain). Dub timing varies by season; don’t wait on it to judge the episode.
Hidden Details
- Youm’s crown is Season 1 propaganda promoted to statecraft.
- Elalude filing “smiles” as policy is the human bloc deciding Rimuru has a thesis, not only a beam.
- Ramiris briefing Tempest is the Academy fairy joining the demon-lord workplace.
Best Moments
- Youm answering Gazel without a build.
- Rimuru saying smiles after Megiddo and not getting laughed out.
- Ramiris’s warning landing like a siren in a conference room.
Pros & Cons
Pros: Specific to “Ramiris‘s Warning” — The council episode with stamps: a king-candidate, a fairy alarm, a thesis said out loud. Required before the dance.
Cons: Requires earlier episodes. Viewers who only want climax fights may call the political / logistics scenes slow even when they are load-bearing.
Final Verdict
Kagex overall: 8.4 / 10 — The council episode with stamps: a king-candidate, a fairy alarm, a thesis said out loud. Required before the dance.
- Story: 8.6
- Characters: 8.6
- Animation: 8.1
- Music: 8.2
- Enjoyment: 8.4
Youm getting king-interviewed by Gazel is a great weird job interview. Ramiris showing up to brief the table is the “oh right she is a demon lord” reminder the cour needed. Finally a meeting with a stamp.
What to Expect Next
Next week Clayman calls Walpurgis, and Rimuru realizes the enemy army is marching on Eurazania, not Tempest.
Next: Season 2 Episode 16 — The Congress Dances. Watch legally on Crunchyroll.
FAQ
Do I need to watch Season 2 Episode 15?
Yes if you are watching the TV series in order. Skipping “Ramiris‘s Warning” leaves a hole later episodes assume you have.
What is the Japanese title?
ラミリスの報せ — Crunchyroll English title is “Ramiris‘s Warning.”
When did it air?
July 20, 2021 in Japan. ~24 minutes. Studio 8bit.
Is this Season 2 filler?
No. Tensura’s “quiet” hours are usually nation, diplomacy, or setup — not recap filler.
Where does this sit in the overall count?
Overall TV episode 39 of the main series (S1–S3 are 72; Season 4 continues from 73).
Should I watch Slime Diaries first?
No. Diaries is optional comedy. This review is the main TV track.
Where are character guides?
Tensura characters — Rimuru, Veldora, Milim, and the Tempest officers.
Where are facts / spoilers for the franchise?
Fact and Spoilers on the hub. This episode page stays inside Episode 15.
Keep exploring
- Tensura anime hub
- Season 1 review
- Overall review
- Previous: Season 2 Episode 14 — A Meeting of Humans and Monsters
- Next: Season 2 Episode 16 — The Congress Dances
- Characters
- Fact and Spoilers
Your turn
Was “Ramiris‘s Warning” a continue episode or a skip-risk for you? Favorite beat? Who should get the next character page?
Sources: Crunchyroll episode titles; Wikipedia list of Tensura episodes; official Tensura anime site.