Shion complains about the food, Diablo joins the payroll, and Raphael finishes the two-year homework on Unlimited Imprisonment. Veldora walks out of a slime. Then the reports land: Milim declared war, Eurazania is wrecked, the Church still hates the living. Mid-cour finale as a reunion with a disaster attached.
Previous: Season 2 Episode 11 — Birth of a Demon Lord · Hub: That Time I Got Reincarnated as a Slime
Hook
Shion complains about the food, Diablo joins the payroll, and Raphael finishes the two-year homework on Unlimited Imprisonment. Veldora walks out of a slime. Then the reports land: Milim declared war, Eurazania is wrecked, the Church still hates the living. Mid-cour finale as a reunion with a disaster attached.
This page is the sequential stop after Episode 11 — 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 12 (overall #36)
- English title: The One Unleashed
- Japanese episode title: 解き放たれし者
- Runtime: ~24 minutes
- Studio: 8bit
- Original air date: March 30, 2021
- Kagex score: 9.2 / 10
- Where to watch legally: Crunchyroll (region-dependent)
Should You Watch It?
Watch it. Veldora’s release is the Season 1 promise cashed, and the Clayman/Milim news is the next cour’s fuse. Skip it and the dragon in the opening is just merch. Joy, then a bucket of ice. Sequential after the revival. If you have been waiting since the cave, this is the hour.
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 “The One Unleashed.” Fight-only watchers may feel the talkier stretches; nation-building fans will not.
Spoiler Warning
Spoilers for Season 2 Episode 12 (“The One Unleashed”) follow. Stop above for a clean first watch. This page does not spoil later episodes.
Story Recap
The fallen, standing, being themselves
Shion is back, which means the kitchen is a national security issue again. Gobta is back, which means the joke is allowed to live. The revival working is the three percent becoming a country. Rimuru gets to be a mayor who arrived on time, two weeks late. The warmth is real. It has to be. The next reports will not be.
Diablo on the staff is the surreal HR of a newborn demon lord: a primordial taking notes in a goblin capital. The cabinet now includes a color of the primordial and a secretary who died. Tempest has never looked more like itself and more like a problem for the map.
Shion back means the kitchen is a national security issue again.
A promise from a sealed cave, completed
Raphael reports that the analysis of Unlimited Imprisonment is done. Two years after a lonely slime promised a bored dragon he would crack the hero’s seal, the homework is finished. Veldora can come out. The first relationship in the series gets a door.
Rimuru doing this now, after a massacre and a festival, is character: he still pays cave debts while the world is on fire. The Storm Dragon exiting a slime in a rebuilt (barely) capital is a visual the premiere invented and this finale spends. It should feel like a hug. It does. It should also feel like deploying a strategic weapon. It does that too.
Raphael reports Unlimited Imprisonment analysis done.
Raphael finishing the seal is why the Festival chain was always going to end in a dragon. Homework in a war. Cave promise cashed. Door, hug, and weapon, all three in one exit.
The storm, unleashed on purpose
Veldora in the open air after centuries is loud, dumb, loyal, and myth-class. He wants novels and company. The map will read him as the calamity that once erased a town. Both readings are him. Tempest just became the country that keeps a storm dragon as family. Gazel felt that aura on Rimuru in Season 1. Now the aura has a body again.
The joy is the point of the mid-cour finale’s first half. Found family at maximum size: dead secretary, primordial butler, sealed dragon, named ogres, orc corps, a goblin who wanted a spa. Then the messenger arrives, because Tensura will not let a hug be the last shot of a cour.
Veldora in open air after centuries is loud, dumb, loyal, myth-class. Wants novels and company.
Milim’s war, Eurazania’s ash, Church’s leftover hate
Reports: Milim has declared war. Eurazania is destroyed (as far as the messengers know). Falmuth is wrecked but the Western Holy Church’s hostility toward monsters did not clock out with Megiddo. Clayman’s fingerprints are on the Milim news whether the hour names every gear or not. The Harvest Festival solved Shion. It did not solve the board.
Rimuru’s new title is a magnet. Veldora’s release is a magnet. The next cour is already written in those two sentences. The unleashed one is the dragon. The unleashed problem is everything else.
Reports: Milim declared war. Eurazania destroyed as far as messengers know. Falmuth wrecked but Church hostility toward monsters did not clock out with Megiddo. Clayman’s fingerprints on the Milim news whether the hour names every gear.
A feast with a war on the calendar
They will celebrate. They have to. The fallen just learned how to breathe. Veldora just learned the town exists. Then they will go to work on Clayman, on a demon-lord banquet, on a fake war that might be a real one. The mid-cour ending is a door, not a bow.
Rimuru wanted a quiet life. He has a dragon, a primordial, a resurrected cabinet, and a map on fire. The title is The One Unleashed. It is Veldora. It is also the slime who stopped pretending he could stay small.
They will celebrate. Have to. Fallen just learned how to breathe. Veldora just learned the town exists. Then work on Clayman, a demon-lord banquet, a fake war that might be real.
Story Analysis
Episode 36 is a structural sandwich: revival sitcom, cave-promise payoff, geopolitical bucket of ice. Veldora’s release is the series’ oldest plot thread cashed with perfect timing — you needed Raphael to do it, you needed the Festival to get Raphael, you needed Megiddo to get the Festival. That chain is Season 2’s spine, and this hour snaps it shut then opens a new one.
Pacing is joy then report. Comedy returns with Shion and Veldora, which is a relief after four grim hours and also a trick to make the Milim news colder. World-building: a storm dragon as a released strategic asset, demon-lord social war, Church as a remaining actor. Emotional peak is Veldora walking out. Intellectual peak is the report. Required. A real mid-finale, not a recap.
Structural sandwich: revival sitcom, cave-promise payoff, geopolitical ice. Veldora’s release is the oldest plot thread cashed with perfect timing — needed Raphael, needed Festival, needed Megiddo. That chain is Season 2’s spine, snapped shut then opened. Pacing joy then report. Comedy returns with Shion and Veldora, relief after grim hours and a trick to make the Milim news colder. Storm dragon as released strategic asset, demon-lord social war, Church remaining. Emotional peak Veldora walking out. Intellectual peak the report. Required. Real mid-finale. Raphael finishing Unlimited Imprisonment is why the Festival chain ended in a dragon. Shion cooking again declares three percent paid in sitcom currency. Milim report Clayman-shaped. Perfect cour break. Hug, then map. The slime who stopped pretending he could stay small. Title does double duty.
Character Analysis
Veldora is the guest of honor of the whole franchise’s first promise. Rimuru as the man who finished his homework in the middle of a war. Shion alive and incorrect about seasoning. Diablo as new furniture. Raphael as the quiet author.
Milim as a report that hurts because we know her as a snack friend. Carrion’s kingdom as ash in a message. Benimaru hearing Eurazania news as a diplomat who just did that route. The cabinet, whole again, looking at a larger war. Veldora’s dumb grin is the character win. The messenger is the plot win.
Veldora guest of honor of the franchise’s first promise. Rimuru the man who finished homework in a war. Shion alive and incorrect about seasoning. Diablo new furniture. Raphael quiet author. Milim as a report that hurts because we know her as a snack friend. Carrion’s kingdom as ash in a message. Benimaru hearing Eurazania news as a diplomat who just did that route. Cabinet whole again, looking at a larger war. Veldora’s dumb grin is the character win. Messenger is the plot win. Family at maximum size then a fuse.
World Building
Unlimited Imprisonment as a solvable (given years and Raphael) hero-class seal. Storm Dragon as a released existence the map will have to reclassify. True demon lord plus dragon plus primordial in one city as a new capital-class threat/alliance. Milim’s declared war as demon-lord theater. Eurazania’s reported destruction as the next map stain. Church hostility surviving Falmuth’s army.
Promises as binding magic in the narrative sense: the cave deal was always going to be a strategic event when cashed. Tempest is no longer a Jura federation only. It is a demon-lord seat with a dragon. That is a different row on the international table.
Unlimited Imprisonment as a solvable (given years and Raphael) hero-class seal. Storm Dragon as a released existence the map will reclassify. True demon lord plus dragon plus primordial in one city as a new capital-class threat/alliance. Milim’s declared war as demon-lord theater. Eurazania’s reported destruction as the next map stain. Church hostility surviving Falmuth’s army.
Nothing here is later-arc homework. If a name or rule is only teased, it stays a tease.
Animation
Veldora’s release is the visual peak: seal-break, dragon mass, then the man-shaped storm in a goblin street. Revival sitcom acting. Diablo standing in the group shot like a glitch. 8bit’s mid-finale budget in the dragon, correctly. Report scenes are plainer. The contrast is the craft. Hug, then map. It looks like a cour ending because it is one.
Veldora’s release is the visual peak: seal-break, dragon mass, then man-shaped storm in a goblin street. Revival sitcom acting. Diablo standing in the group shot like a glitch.
Kagex animation score for this episode: 8.9 / 10 — peaks vs average cuts, not a sakuga clip ranking.
Music and Voice Acting
Score 8.8. 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
- Raphael finishing Unlimited Imprisonment is why the Festival chain was always going to end in a dragon.
- Shion cooking again is the show declaring the three percent paid in sitcom currency.
- Milim’s war report is Clayman-shaped even when the messenger does not have the whole graph.
Best Moments
- Shion alive and immediately herself.
- Veldora stepping out of a two-year stomach into a country.
- The messenger turning a reunion into a war calendar.
Pros & Cons
Pros: Specific to “The One Unleashed” — Cave promise cashed, family standing, map on fire. A real mid-cour finale — joy with a fuse attached.
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: 9.2 / 10 — Cave promise cashed, family standing, map on fire. A real mid-cour finale — joy with a fuse attached.
- Story: 9.2
- Characters: 9.5
- Animation: 8.9
- Music: 8.8
- Enjoyment: 9.3
Veldora walking out still hits like the series hugging you. Then the Milim report kicks the chair. Perfect cour break. Diablo in the group shot is hilarious forever.
What to Expect Next
The second cour opens on a feast, then the kings and dukes arrive to ask a newborn demon lord what he thinks he is doing.
Next: Season 2 Episode 13 — The Visitors. Watch legally on Crunchyroll.
FAQ
Do I need to watch Season 2 Episode 12?
Yes if you are watching the TV series in order. Skipping “The One Unleashed” leaves a hole later episodes assume you have.
What is the Japanese title?
解き放たれし者 — Crunchyroll English title is “The One Unleashed.”
When did it air?
March 30, 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 36 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 12.
Keep exploring
- Tensura anime hub
- Season 1 review
- Overall review
- Previous: Season 2 Episode 11 — Birth of a Demon Lord
- Next: Season 2 Episode 13 — The Visitors
- Characters
- Fact and Spoilers
Your turn
Was “The One Unleashed” 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.
