Charybdis official promotional art” />Charybdis walks toward the capital with Medalodon minions, Magic Jamming, and regeneration, and Rimuru answers with a new appetite called Gluttony. Gazel even sends Pegasus Knights. This is the other big monster siege of Season 1.
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Hook
Charybdis walks toward the capital with Medalodon minions, Magic Jamming, and regeneration, and Rimuru answers with a new appetite called Gluttony. Gazel even sends Pegasus Knights. This is the other big monster siege of Season 1.
This page is the sequential stop after Episode 18 — 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 1, Episode 19 (overall #19)
- English title: Charybdis
- Japanese episode title: 暴風大妖渦(カリュブディス)
- Runtime: ~24 minutes
- Studio: 8bit
- Original air date: February 12, 2019
- Kagex score: 8.8 / 10
- Where to watch legally: Crunchyroll (region-dependent)

Should You Watch It?
Watch it for the setpiece. Episode 19 is the calamity fight the last two hours wired. Skip it and you miss Gluttony’s debut and Dwargon actually showing up as an ally in the field. Action-heavy, still sequential. If you liked the Orc Disaster clash, this is the storm-flavored sequel with more air support.
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 “Charybdis.” Fight-only watchers may feel the talkier stretches; nation-building fans will not.
Spoiler Warning
Spoilers for Season 1 Episode 19 (“Charybdis”) follow. Stop above for a clean first watch. This page does not spoil later episodes.
Story Recap
A calamity with an escort
Charybdis is unsealed and moving on Rimuru’s capital with Medalodon minions. Calamity-class is not a flavor word here. It is a weather system with a body. Tempest’s civilians are the prize. The federation’s whole “we just founded a country” speech is about to be stress-tested by something that eats countries as a hobby.
Rimuru does not get a diplomatic option. You cannot snack this. Milim being in town is both a nuclear option and a civilian-evacuation problem. The staff form a real combined-arms plan instead of a duel queue.
Calamity-class is a weather system with a body, civilians the prize. You cannot snack this. Milim in town is nuclear option and evacuation problem. Combined-arms instead of a duel queue.
A storm-class existence pointed at a capital that just learned chairs is the Veldora vacuum collecting rent, and Tempest has to answer weather with a mouth.
Dwargon’s Pegasus Knights in monster airspace
Gazel Dwargo sends a hundred Pegasus Knights. That is the alliance from the founding episodes becoming aircraft. Dwarven heavy support over a goblin capital is a political image as much as a military one. Humans and monsters on the same side of a calamity is the series dream, briefly true.
It is also not enough by itself. Charybdis is not a dragon you joust. The knights buy time and die into a mechanic. Gazel’s friendship is proven in blood before it is proven in trade deals. Rimuru notices. He is supposed to.
A hundred Pegasus Knights is Episode 5’s trial paying out in air support. Dwarven heavy over a goblin capital is a political image.
Carrion arriving as a peer instead of a raid is the adult in a demon-lord suit, and the bill for Phobio’s socket is about to come due in public.
Magic Jamming and a healing that will not stop
Charybdis’s Extra Skills — Magic Jamming and Ultraspeed Regeneration — invalidate the usual Tempest kit. Casters sputter. Wounds close. Benimaru’s fire, Shion’s blade, Hakurou’s cuts, Ranga’s charges: all of it lands in a body that refuses to stay injured and an air that refuses to stay magical.
This is Starved’s cousin as a design philosophy: unique/extra skills as rule-breakers. The siege is a puzzle, not a HP bar. Great Sage has to invent a new stomach because the old one is not sized for a calamity that regenerates faster than Predator-as-usual can argue.
Magic Jamming plus Ultraspeed Regeneration invalidate the usual kit: casters sputter, wounds close.
Gluttony as a civic tool instead of a loot vacuum is the slime’s kit doing city work, and the storm does not care about the distinction until it is eaten.
Gluttony, opened
Rimuru unleashes Gluttony, the evolved eating skill that can contest a calamity’s mass. The title card of his build since Episode 1 finally goes loud in a capital-defense context. It is ugly, huge, and necessary. The slime who wanted a quiet life becomes a moving event horizon because the alternative is the town becoming silt.
Allies keep the minions and the jamming periphery busy so the mayor can eat the weather. That is combined arms. Souei and the ogre staff are the reason Gluttony has a window. Milim’s restraint — or participation without erasing the map — is the other reason. A demon lord “helping” can be indistinguishable from the disaster.
Gluttony as evolved eating contesting calamity mass is ugly, huge, necessary.
The storm sits down
Charybdis falls. The capital is scarred and standing. Pegasus Knights have a butcher’s bill. Phobio’s shortcut did not make him a demon lord. It made him a man who opened a door. The Harlequins got their test data. Tempest got a victory that looks like a natural disaster report.
Rimuru has a new skill and a new list of people to thank, including Gazel’s dead and living knights. The federation survived its first calamity-class exam. The human world still does not know a slime did it. Youm is still on the road selling a different story. Both facts can be true overnight.
Capital scarred, standing. Pegasus butcher’s bill. Phobio’s shortcut did not make him a demon lord; it made him a man who opened a door.

Story Analysis
Episode 19 is the season’s second monster-siege peak, and it works because the mechanics are specific. Magic Jamming plus regeneration is a better boss design than “big.” Gluttony’s debut is a character beat: Rimuru’s answer to every existential threat is still a mouth, just a scarier one. Gazel’s knights showing up is the emotional alliance payoff from the Dwargon trial way back in Episode 5. That callback is why the hour is more than a kaiju episode.
Pacing is assault, mechanic wall, skill evolution, collapse. Comedy is mostly off. World-building: calamity-class as a legal category of monster, extra skills that shut off magic, dwarf air cavalry as a real doctrine. Emotional impact is mixed — triumph plus the knowledge that clowns can order this again. If 14 was moral devouring, 19 is civic devouring. Same protagonist tool, bigger zip code.
Second monster-siege peak works because mechanics are specific. Jamming plus regen is better than “big. ” Gluttony’s debut is character: Rimuru’s answer is still a mouth, scarier. Gazel’s knights are the Dwargon callback that makes it more than kaiju. If 14 was moral devouring, 19 is civic devouring. Same tool, bigger zip code. Comedy off. Triumph plus the knowledge clowns can order this again. Required spectacle. The other big monster peak of Season 1, earned by two hours of wiring. Efficiency as horror starts here and will return as Megiddo’s cousin.
Required calamity hour: Gluttony as a civic tool, Carrion as a peer who has to live with the bill, and a storm that makes the federation look like a country that can actually answer weather.
Character Analysis
Rimuru is the closer. Gazel Dwargo is present through his knights, which is a hell of a character statement. Benimaru, Shion, Hakurou, Ranga, Souei are the line. Milim is the unguided missile they have to work around.
Phobio is the fool of the tragedy, if he is still on the board as the unsealer. Footman and Tear are the offscreen graders. Rigurd is civil defense. Medalodons are the mooks with enough design to matter. Lots of hands on the siege. Gluttony is still Rimuru’s scene.
Rimuru the closer. Gazel present through knights — a hell of a character statement. Named ogres and Ranga as the line. Milim the unguided missile to work around. Phobio the fool of the tragedy if still on the board as unsealer. Footman and Tear offscreen graders. Rigurd civil defense. Medalodons mooks with enough design. Lots of hands. Gluttony is still Rimuru’s scene. Dead knights are Gazel’s scene. Both needed for the hour to be an alliance, not a solo laser.
Carrion in the aftermath is the adult in a demon-lord suit, and Phobio’s shame is the character leftover the clowns already invoiced.

World Building
Calamity-class monsters as siege weapons. Extra Skills that jam magic and regenerate at ultraspeed. Pegasus Knights as Dwargon’s expeditionary arm. Gluttony as an evolution of Predator/eating skills under existential pressure. Capital defense as a federation exam.
Alliances that send bodies, not only letters. Harlequin ability to unseal strategic monsters. Storm lore tying Charybdis to the same mythic weather family as Veldora without needing a lecture. Tempest’s skyline can be a battlefield. That is a new civic fact.
Calamity-class as legal monster category. Extra skills that shut off magic and regenerate at ultraspeed. Pegasus Knights as Dwargon’s expeditionary arm. Gluttony as Predator evolved under existential pressure. Capital defense as federation exam. Alliances that send bodies, not only letters. Harlequin ability to unseal strategic monsters. Storm lore tying Charybdis to Veldora’s family without a lecture. Tempest’s skyline can be a battlefield. New civic fact. Holy and clown actors can schedule weather now.
Nothing here is later-arc homework. If a name or rule is only teased, it stays a tease.
Animation
8bit goes wide again: Charybdis mass, Medalodon packs, Pegasus Knights in the air, Gluttony’s devour as a visual event. TV kaiju with decent clarity. Jamming is sold with casters failing, not only a UI caption. Knight charges are the pretty shots. The eat-the-storm finish is the money. Not movie-budget, but one of Season 1’s better action hours.
Wide again: Charybdis mass, Medalodon packs, Pegasus air, Gluttony as a visual event. TV kaiju with decent clarity. Jamming sold with casters failing, not only a caption.
Kagex animation score for this episode: 8.7 / 10 — peaks vs average cuts, not a sakuga clip ranking.
Music and Voice Acting
Score 8.5. 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
- Gazel sending knights is Episode 5’s trial paying out in corpses and loyalty.
- Magic Jamming is why “just have Benimaru burn it” is not a plan.
- Gluttony arriving in a capital defense makes Rimuru’s eating a public miracle, not a private cave trick.
Best Moments
- Pegasus Knights over a goblin capital — the alliance made visible.
- The moment magic stops working and the regeneration will not.
- Gluttony opening like a civic emergency tool.
Pros & Cons
Pros: Specific to “Charybdis” — A strong calamity siege with Gluttony’s debut and Dwargon in the air. The other big monster peak of Season 1, and it earns the noise.
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: 8.8 / 10 — A strong calamity siege with Gluttony’s debut and Dwargon in the air. The other big monster peak of Season 1, and it earns the noise.
- Story: 8.7
- Characters: 8.6
- Animation: 8.7
- Music: 8.5
- Enjoyment: 8.9
Gluttony versus Charybdis is a great “the slime is the natural disaster now” image. Gazel’s knights showing up got me — that’s the Dwargon friendship made expensive. Solid siege episode.
What to Expect Next
Next week the storm is gone, Shizu’s leftover regret shows up in a dream, and Rimuru walks into a human capital to meet a guildmaster.
Next: Season 1 Episode 20 — Yuuki Kagurazaka. Watch legally on Crunchyroll.
FAQ
Do I need to watch Season 1 Episode 19?
Yes if you are watching the TV series in order. Skipping “Charybdis” leaves a hole later episodes assume you have.
What is the Japanese title?
暴風大妖渦(カリュブディス) — Crunchyroll English title is “Charybdis.”
When did it air?
February 12, 2019 in Japan. ~24 minutes. Studio 8bit.
Is this Season 1 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 19 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 19.
Keep exploring
- Tensura anime hub
- Season 1 review
- Overall review
- Previous: Season 1 Episode 18 — Evil Creeps Closer
- Next: Season 1 Episode 20 — Yuuki Kagurazaka
- Characters
- Fact and Spoilers
Your turn
Was “Charybdis” 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.