August 15, 2026 · 8 min read · Episode guide · Episode 10 · Kagex Blog

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That Time I Got Reincarnated as a Slime Episode 10 Review — The Master of Greed

Anime hub: That Time I Got Reincarnated as a Slime · Season 4 (through Episode 18)

Contains spoilers for this episode.

That Time I Got Reincarnated as a Slime Season 4 Episode 10 The Master of Greed official promotional art
Official promotional art. © Fuse / Kodansha / Eight Bit / Tensura Production Committee

Kagex rating: 8.9 / 10

Episode: Season 4 · Episode 10 — “The Master of Greed”

Air date: June 12, 2026 · Runtime: ~24 minutes · Studio: 8bit

The Master of Greed is Maribel’s field test failing in public. Holy Field, backup, the skill itself — Rimuru came prepared. Yuuki plays puppet, then plays himself. Someone walks away with Greed. Milim is still outside with a dragon. The title is a question, not a coronation.

Previous: Season 4 Episode 9 — Investigating the Ruins · Hub: That Time I Got Reincarnated as a Slime

Hook

The Master of Greed is Maribel’s field test failing in public. Holy Field, backup, the skill itself — Rimuru came prepared. Yuuki plays puppet, then plays himself. Someone walks away with Greed. Milim is still outside with a dragon. The title is a question, not a coronation.

This page is the sequential stop after Episode 9 — 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 4, Episode 10 (overall #82)
  • English title: The Master of Greed
  • Japanese episode title: 強欲の主人
  • Runtime: ~24 minutes
  • Studio: 8bit
  • Original air date: June 12, 2026
  • Kagex score: 8.9 / 10
  • Where to watch legally: Crunchyroll (region-dependent)
That Time I Got Reincarnated as a Slime official banner Season 4 Episode 10
Official banner art. © Fuse / Kodansha / Eight Bit / Tensura Production Committee

Should You Watch It?

Watch this. It is the cour’s human-villain climax. If you skip, Yuuki’s position and Maribel’s fate get spoiled by accident in Episode 83 anyway. Action-heavy, twist-heavy. I will not pretend a recap knows every hit’s exact HP; stick to the aired shape: her control plan folds, Yuuki is not the victim he looked like, the reactor is not there for her.

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 Master of Greed.” Fight-only watchers may feel the talkier stretches; nation-building fans will not.

Spoiler Warning

Spoilers for Season 4 Episode 10 (“The Master of Greed”) follow. Stop above for a clean first watch. This page does not spoil later episodes.

Story Recap

The ambush that was expected

Shion takes Yuuki. Ranga and Gobta take the nameless knight who hates Rimuru. Gaiye jumps Rimuru and dies fast. Maribel drops a Holy Field and calls backup. It fails because Rimuru had people on that backup already. She tries Greed as a cage. It does not stick. She still will not quit, and she gets overpowered. The “master” cannot master the one person the whole plot was for. That is the joke and the relief.

Anti-skill, then a knife

Yuuki beats Shion and turns to Rimuru with Anti-skill — magic and skills bouncing. Rimuru still puts him down. Kagali and the researchers beg for Yuuki’s life. He says he is free of Maribel. The knight was a Battlesage avenging a “dead” Glenda; he stands down when he hears she lives. Rimuru sends Yuuki and Kagali after Maribel, the others to the dark elves, himself toward Milim. Maribel finds no reactor. Yuuki and Kagali catch her and say they tricked her. He was pretending. He built Anti-skill. He stabs her, takes Greed as she dies, and talks world domination like a man who just ate a unique skill. That is the aired betrayal. Do not decorate it with fake last words.

Who was the master

Maribel thought she was the author. Yuuki was running a second script. Granville’s granddaughter dies in a ruin she emptied. The title lands on him more than her, and the show is allowed to be ugly about it. Rimuru choosing not to execute Yuuki on the spot is the same mercy that keeps getting this series in trouble. Kagali asking for that mercy is the ruins partner still in his corner — for now.

A dragon still in progress

The episode does not finish Milim’s fight. Chaos Dragon is still the B-plot storm. Greed’s user changing hands does not pause a calamity. That split is why the next title exists. This hour is the human knife. Next hour is the pet.

Empty reactor, full inventory

Maribel’s prize was not in the hole. Yuuki’s prize was her. Rimuru’s prize is a ruined plan and a still-living problem he just let walk. Groundwork of Greed, indeed.

That Time I Got Reincarnated as a Slime key visual Season 4 Episode 10
Official key visual. © Fuse / Kodansha / Eight Bit / Tensura Production Committee

Story Analysis

Twisty without needing extra fanfic. The Holy Field callback to Church kit is funny in a ruin. Gaiye’s death is the heel running out of extra lives. Yuuki’s pretend-puppet is the cour’s nastiest character swing. Pacing is fight, twist, stab, cut to dragon.

World-building is Anti-skill as a unique answer to Rimuru’s kit, Greed as transferable, Holy Fields as portable, and reactors as a rumor that can be wrong. Do not claim a blow-by-blow that the broadcast did not freeze for you. The political fact is enough: Maribel is out. Yuuki is up. Milim is not done.

Character Analysis

Rimuru is the prepared victim who refuses to be a victim. Maribel is Greed’s believer until the knife. Yuuki is the double agent of his own story. Kagali is the one who asks for a life. Shion loses a round and the plot still needs her later. Gobta and Ranga handle a Battlesage with a Glenda-shaped grudge. Gaiye finally stays down. Milim is offscreen thunder. Researchers are the chorus that keeps Yuuki breathing. Glenda is the offscreen fact that ends a revenge knight’s quest.

That Time I Got Reincarnated as a Slime promo art Season 4 Episode 10
Promo art. © Fuse / Kodansha / Eight Bit / Tensura Production Committee

World Building

Greed can fail on Rimuru. Anti-skill can still lose a fight. Unique skills can be stolen at death. Holy Fields work in ruins, not only churches. A reactor can be a lie you tell a greedy child. Battlesages can be Greed-leased. Tempest revival/intel (Glenda lives) can defuse a revenge plot mid-swing. Letting Yuuki walk is a world decision, not a cutscene mercy-only.

Nothing here is later-arc homework. If a name or rule is only teased, it stays a tease.

Animation

This is an action week: Holy Field, Gaiye’s end, Anti-skill clashes, a stab. 8bit should spend here. Keep Maribel’s Greed effects distinct from Yuuki’s Anti-skill so the twist reads. The empty reactor room is a still after noise. Chaos Dragon as a cutaway, not the full fight.

Kagex animation score for this episode: 8.6 / 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

  • Backup dying offscreen is Rimuru’s “I knew” from the packing episode paying off.
  • The knight standing down for Glenda is Season 4’s recruit policy saving a life.
  • No reactor is the show refusing Maribel a superweapon consolation prize.

Best Moments

  • Greed sliding off Rimuru.
  • Yuuki dropping the puppet act.
  • Maribel’s reactor room containing nothing she wanted.

Pros & Cons

Pros: Specific to “The Master of Greed” —

The Greed fight as a failed coronation and a successful theft. Watch it. Ugly, twisty, and it still leaves a dragon running.

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: 8.9 / 10

The Greed fight as a failed coronation and a successful theft. Watch it. Ugly, twisty, and it still leaves a dragon running.

  • Story: 8.9
  • Characters: 8.8
  • Animation: 8.6
  • Music: 8.5
  • Enjoyment: 8.8

Yuuki’s fake possession is the nasty kind of clever. I did not need Maribel to be a final boss forever, but the knife still stings. Gaiye staying dead is overdue.

What to Expect Next

A True Dragon child’s pet, a soul in a box, and a name that turns a weapon back into a friend.

Next: Season 4 Episode 11 — Milim’s Friend. Watch legally on Crunchyroll.

FAQ

Do I need to watch Season 4 Episode 10?

Yes if you are watching the TV series in order. Skipping “The Master of Greed” leaves a hole later episodes assume you have.

What is the Japanese title?

強欲の主人 — Crunchyroll English title is “The Master of Greed.”

When did it air?

June 12, 2026 in Japan. ~24 minutes. Studio 8bit.

Is this Season 4 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 82 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 charactersRimuru, 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 10.

Keep exploring

Your turn

Was “The Master of Greed” 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.

Our reaction

Spoiler-aware take after the recap — how the episode felt to watch.

8.9/10

Yuuki’s fake possession is the nasty kind of clever. I did not need Maribel to be a final boss forever, but the knife still stings. Gaiye staying dead is overdue.

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