Rimuru vs Milim Power Levels: Is the Slime Finally Stronger in Season 4?
If you’ve been following That Time I Got Reincarnated as a Slime for a while, you already know this isn’t your typical power-scaling debate. The dynamic between Rimuru Tempest and Milim Nava has always been more “chaotic best friends” than true rivals—but let’s be honest, every fan has wondered: what happens if they actually go all out?
Now, heading into what Season 4 is likely to cover, that question isn’t hypothetical anymore. The gap that once felt infinite is shrinking—and fast.
The Old Reality: Milim Was on Another Level
Early in the series, Milim wasn’t just stronger than Rimuru—she was practically a force of nature.
We’re talking about someone who is the daughter of a creator-level dragon, has effectively infinite energy, and once needed multiple top-tier Demon Lords just to be stopped.
Back in Season 1, Rimuru wasn’t even in the same league. The difference wasn’t skill—it was existence itself.
Why Milim Felt Untouchable
- Magicule Breeder Reactor: Milim doesn’t run out of power. The longer the fight goes, the stronger she becomes.
- Stardust Energy: This isn’t just another magic system—it’s a cosmic-level force that very few characters can even understand, let alone counter.
- Stampede Mode: When she loses control, she becomes a walking catastrophe capable of leveling entire regions.
At that stage, Rimuru wasn’t fighting Milim—he was surviving her presence.
Season 4 Rimuru: This Isn’t the Same Slime
After his evolution into a True Demon Lord, Rimuru is no longer just a clever survivor with broken abilities—he’s becoming something far more dangerous: a perfectly optimized being.
The Real Game-Changer: Ciel
The evolution of Raphael into Ciel is where everything shifts dramatically.
Ciel isn’t just an AI—it’s essentially a combat supercomputer, a flawless strategist, and a system that continuously upgrades Rimuru in real time. While Milim relies on instinct and overwhelming force, Rimuru now operates with precision and calculated efficiency.
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Ultimate Skills: Where the Power Gap Collapses
By the time Season 4 reaches its major arcs, especially if it follows the Light Novel progression, Rimuru’s abilities become borderline absurd.
Key Abilities to Watch
- Void God Azathoth: Grants access to Nihility Collapse, a destructive force that rivals or even surpasses Stardust.
- Harvest Lord Shub-Niggurath: Allows Rimuru to create, modify, and distribute abilities like a system administrator rewriting code.
- Turn Null (Nihility Energy): Not just destructive power, but anti-existence itself.
At this point, Rimuru isn’t just strong—he’s becoming a system-breaking entity.
Side-by-Side Comparison
| Version | Who Wins | Why |
|---|---|---|
| Anime (End of Season 3) | Milim | Still dominates in raw power and experience |
| Manga (Current) | Milim (slightly) | Rimuru is catching up but lacks a full counter |
| Light Novel (Late Arcs) | Rimuru | Evolves beyond Demon Lord level entirely |
The Core Difference: Power vs Control
This is where the debate gets really interesting.
Milim equals infinite power.
Rimuru equals perfect control.
Milim fights like a natural disaster—unpredictable, overwhelming, and emotional. Rimuru, guided by Ciel, fights like a machine—calculated, adaptive, and efficient.
And at high levels, control often matters more than raw output.
So Who Actually Wins in Season 4?
Short answer: it depends on timing.
Early Season 4
- Milim still has the advantage in raw power
- Greater combat experience
- Overwhelming presence in direct confrontation
Rimuru can survive and adapt, but not dominate yet.
Late Season 4 (If Light Novel Content Is Adapted)
- Rimuru reaches True Dragon-level evolution
- Gains abilities that counter Milim’s strengths
- Operates on a fundamentally higher level of existence
At that point, the fight shifts from endurance to reality manipulation.
My Take as a Fan
This progression is one of the most satisfying aspects of the series. Milim being overpowered was fun, but it also made her feel like an unreachable ceiling. Watching Rimuru steadily and intelligently reach that level—and eventually surpass it—feels earned.
What makes it even better is that Rimuru doesn’t win by becoming more explosive, but by becoming smarter, more efficient, and fundamentally different as a being.
Final Verdict
- Milim dominates early
- Rimuru catches up mid-way
- Rimuru surpasses her late
By the later arcs, Rimuru isn’t just stronger than Milim—he’s operating on a level that starts to resemble a god-like existence. Considering he started as a simple slime, that evolution is nothing short of incredible.
