Rimuru, Shion, and Ranga finally leave for Walpurgis while Shuna, Hakurou, and Souei walk into a fog that eats vision and magic sense. Adalmann the Index Finger, the White King, is waiting. A shrine maiden versus a death priest is the duel the title paid for.
Previous: Season 2 Episode 20 — On This Land Where It All Happened · Hub: That Time I Got Reincarnated as a Slime
Hook
Rimuru, Shion, and Ranga finally leave for Walpurgis while Shuna, Hakurou, and Souei walk into a fog that eats vision and magic sense. Adalmann the Index Finger, the White King, is waiting. A shrine maiden versus a death priest is the duel the title paid for.
This page is the sequential stop after Episode 20 — 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 21 (overall #45)
- English title: Adalmann, the Index Finger
- Japanese episode title: 示指のアダルマン
- Runtime: ~24 minutes
- Studio: 8bit
- Original air date: August 31, 2021
- Kagex score: 8.7 / 10
- Where to watch legally: Crunchyroll (region-dependent)
Should You Watch It?
Watch it. Adalmann is one of Clayman’s best officers, and Shuna getting a real fight is overdue. Skip it and the castle approach is a blank. Split between banquet departure and fog war. Sequential. If you like Shuna as more than a civil smile, this is her 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 “Adalmann, the Index Finger.” Fight-only watchers may feel the talkier stretches; nation-building fans will not.
Spoiler Warning
Spoilers for Season 2 Episode 21 (“Adalmann, the Index Finger”) follow. Stop above for a clean first watch. This page does not spoil later episodes.
Story Recap
The banquet party, clocking out of the mud
Prep complete, Rimuru heads to Walpurgis with Shion and Ranga. Ramiris takes Beretta and Treyni. The split the eve promised is now a teleport. The mayor leaves a field that just sprouted a calamity encore. That would be irresponsible if the banquet were optional. It is not. Clayman’s courtroom is a second map that can still kill the first.
Shion in banquet-combat clothes is the visual of a woman who died in a street going to argue with the producer. Ranga as plus-one is the first named wolf in a room of calamities. They look underdressed. They are not.
The teleport is also a costume change. Banquet clothes in a war is Rimuru insisting Walpurgis is still a meeting even when it is a hit.
Fog that lies to scouts
Shuna, Hakurou, and Souei approach Clayman’s castle through fog that blinds eyes and magic detection. Souei’s whole job class is information. The fog is a targeted nerf. Hakurou’s age does not get a weather exemption. Shuna’s analysis magic hits a wall. The Index Finger designed an approach that deletes Tempest’s usual kit.
This is Holy Field logic in a different church: death magic, undead doctrine, a White King who used to be a holy man. The castle is not empty. It is a parish of corpses.
A scout whose whole job is seeing, walking into weather designed to unsee him, is professional humiliation with a body count attached. Clayman studied Tempest’s kit and built a wall for it.
Three kits nerfed on purpose is the Finger as an architect. Parish of corpses, not an empty castle. Profession off. Then the White King steps out of the weather he designed.
Adalmann, Index Finger, White King
Adalmann steps out of the fog as Clayman’s Index Finger — death priest, undead commander, a man who still thinks in temple grammar. He is not Yamza. He is not a clown. He is a believer who picked the wrong lord and kept the sermons. Shuna facing him one-on-one is the episode’s bet: the civil ogre princess as an anti-undead specialist, not a hostage.
Hakurou and Souei holding the adds is the correct supporting math. The old saint and the ninja clear the parish so the maiden can argue theology with a corpse-priest. That sentence is Tensura. It is also a real fight.
Faith as a class is the Finger variety the last episode promised. Yamza was a coward with a remote.
Shuna’s fight, not a support buff
Shuna versus Adalmann is holy-versus-unholy with ogre onmyo energy: barriers, analysis, the kind of combat the show usually gives to Benimaru’s fire. Giving it to Shuna is the character gift of the hour. She has been diplomacy and healing and “the reasonable one.” Here she is the answer to a death priest. Adalmann is strong enough that it is not a squash. White King is a title he earned in a worse church than this fog.
The duel is the reason the episode is named for him and still belongs to her. Index Finger as a boss. Shrine maiden as the protagonist of the mud while Rimuru is in transit to a hall.
Giving Benimaru’s usual fire-hour to Shuna is the character gift. Barriers, onmyo, analysis as weapons.
A castle still ahead, a banquet already starting
They do not finish Clayman’s entire house this hour. They finish the fog’s landlord enough to keep moving. Dual clocks: Walpurgis seating versus castle crawl. The Index Finger is the quality check that Clayman’s Five were not only Yamza-shaped cowards. One Finger was a calamity socket. One was a priest. The next hour’s hall will have the hand itself.
Shuna standing in thinning fog is the image. Rimuru sitting down among demon lords is the other. Both are Tempest. The show is finally running them at the same time without apology.
They finish the landlord of the fog, not the whole house. Dual images: maiden in thinning grey, slime sitting down among calamities. Both Tempest. Show running them together without apology.
Story Analysis
Episode 45 is Shuna’s overdue action hour inside a named-Finger boss, and it works because Adalmann is specific: a holy man gone undead, not a generic skeleton general. Fog as anti-Souei tech is elegant. Splitting the banquet departure into the same episode as the fog keeps the dual-stage promise honest. Hakurou and Souei as add-clear is respectful of their jobs without stealing Shuna’s duel.
Pacing is departure plus boss. Comedy is thin. World-building: Five Fingers as distinct classes, death-fog as castle security, former holy magic inverted. Required. If you thought Shuna was only a civil smile, this is the correction. Adalmann is cool enough to remember after Clayman dies. That is good officer design.
Shuna’s overdue action hour works because Adalmann is a holy man gone undead, not a skeleton general with a health bar. Fog as anti-Souei tech is elegant villain homework. Splitting banquet departure into the same episode as the duel keeps the dual-stage promise honest instead of a next-week bumper. Hakurou and Souei as add-clear respects their jobs without stealing the maiden’s fight. If you thought she was only civil, this is the correction. He should be cool enough to remember after the producer dies. That is good officer design, and it is why the title can belong to him while the hour belongs to her.
Adalmann is cool enough to remember after Clayman dies. That is good officer design. Fog that eats magic sense is a custom anti-Souei wall, and Shuna as the answer is the civil minister’s second job, overdue and specific.
Character Analysis
Shuna as the lead of the mud. Adalmann as the White King, Index Finger, the interesting one. Hakurou and Souei as the parish-clear. Rimuru, Shion, Ranga as the banquet trio. Ramiris’s bloc as the other RSVP.
Clayman as the castle’s absentee landlord. Benimaru still on the wider field. Adalmann’s faith is the character. Shuna’s steel is the other. Souei hating the fog is the professional beat. The White King is the guest star the title promised. He should feel like a waste when he falls, because good Fingers should.
Shuna is the mud’s lead. Adalmann is the interesting Finger: believer, wrong lord, sermons kept. Hakurou and Souei parish-clear so the duel can be hers. Rimuru, Shion, and Ranga are the banquet trio in transit, underdressed on purpose. Ramiris’s bloc is the other RSVP. Clayman is absentee landlord. Benimaru still owns the wider field. Souei hating the weather is the professional beat. Dual MVPs: maiden steel, priest faith. Guest star worth the card. Waste when he falls, because good Fingers should hurt to lose.
The White King is the guest star the title promised. He should feel like a waste when he falls, because good Fingers should, and Shuna’s steel is the other half of that waste.
World Building
Index Finger as a death-priest office in Clayman’s hand. Fog that blinds magic detection as anti-recon architecture. Undead holy inversion: temple skills with the god swapped for a demon lord. Dryad/fairy blocs as legal banquet attendees. Dual operations as Tempest doctrine.
Castles as parishes. Officers as theologians. Shuna’s kit as the Jura answer to Western-style death magic. The Five Fingers not being clones — Yamza’s cowardice versus Adalmann’s faith — is the organizational world-building. Clayman hired specialists. Specialists can still lose to a maiden who does paperwork and exorcism on the same resume.
Index Finger as a death-priest office. Fog that blinds magic detection as anti-recon architecture Clayman commissioned after studying Tempest. Undead holy inversion: temple skills, god swapped. Dryad and fairy blocs as legal banquet attendees. Dual operations as doctrine. Castles as parishes. Officers as theologians. Shuna’s kit as the Jura answer to Western-style death magic.
Clayman hired specialists. Specialists can still lose to a maiden who does paperwork and exorcism on the same resume, and that resume is now Jura’s answer to Western death magic.
Nothing here is later-arc homework. If a name or rule is only teased, it stays a tease.
Animation
Fog atmosphere is the craft: low visibility, pale undead, Shuna’s seals as color in the grey. Banquet-departure shots as the other palette (richer, formal). 8bit doing two looks in one hour. Adalmann’s design has to carry “White King.” It does enough. Shuna’s fight is prettier than Yamza’s. Correct. TV boss with extra glow. The fog is the mood. The seals are the flex.
Fog is the craft: low visibility, pale undead, Shuna’s seals as the only color in the grey.
Kagex animation score for this episode: 8.5 / 10 — peaks vs average cuts, not a sakuga clip ranking.
Music and Voice Acting
Score 8.4. 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
- Fog that eats magic sense is a custom anti-Souei wall, which means Clayman studied Tempest’s kit.
- Shuna as the Adalmann answer is the civil minister’s second job description.
- Banquet trio leaving during a Finger fight is the dual-clock made literal.
Best Moments
- Rimuru’s party leaving for the worst RSVP on the continent.
- The fog turning Souei’s profession off.
- Shuna taking a death priest as her fight, not a buff for the boys.
Pros & Cons
Pros: Specific to “Adalmann, the Index Finger” — Shuna’s action hour versus a death priest worth a title card. Required Finger. The fog is the mechanic; the maiden is the point.
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: 8.7 / 10 — Shuna’s action hour versus a death priest worth a title card. Required Finger. The fog is the mechanic; the maiden is the point.
- Story: 8.7
- Characters: 8.9
- Animation: 8.5
- Music: 8.4
- Enjoyment: 8.7
Shuna versus Adalmann is the overdue “she was always a combatant” hour. The fog nerfing Souei is nasty and smart. Banquet departure in the same episode kept the dual clock honest.
What to Expect Next
Next week the hall doors open, Guy tells Clayman to swing himself, and a brainwashed dragonoid walks into a one-on-one.
Next: Season 2 Episode 22 — Demon Lords’ Banquet: Walpurgis. Watch legally on Crunchyroll.
FAQ
Do I need to watch Season 2 Episode 21?
Yes if you are watching the TV series in order. Skipping “Adalmann, the Index Finger” leaves a hole later episodes assume you have.
What is the Japanese title?
示指のアダルマン — Crunchyroll English title is “Adalmann, the Index Finger.”
When did it air?
August 31, 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 45 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 21.
Keep exploring
- Tensura anime hub
- Season 1 review
- Overall review
- Previous: Season 2 Episode 20 — On This Land Where It All Happened
- Next: Season 2 Episode 22 — Demon Lords’ Banquet: Walpurgis
- Characters
- Fact and Spoilers
Your turn
Was “Adalmann, the Index Finger” 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.
