Welcome to Demon School! Iruma-kun Season 4 Explained: Hidden Truths, Demon King Theories & Iruma’s Real Power Unlocked
If you’ve been following Welcome to Demon School! Iruma-kun, you already know this series starts as a fun, cozy school fantasy… and then slowly turns into something way more layered than it first looks.
With Season 4 officially confirmed for April 2026, the hype isn’t just about the next arc—it’s about what Iruma really is and where the story is secretly heading.
As an anime fan who has stuck with this series from the “Iruma just trying not to get eaten” phase all the way to the current high-stakes tournaments and political demon-world drama, I can honestly say: Season 4 feels like a turning point.
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A New Chapter Begins: What Season 4 Is Setting Up
Season 4 is expected to adapt some of the most competitive and flashy arcs yet:
- The Music Festival Arc
- The Evidol Games Arc
- Rising class rankings and official recognition battles
But underneath the performances and comedy, there’s a much darker question forming: Is Iruma Suzuki actually becoming the next Demon King… or was he always meant to be one?
Theory 1: Iruma = The Missing Demon King?
This is the most popular and controversial theory in the fandom. Some fans believe Iruma is connected to the former Demon King, Derkila.
Why people believe it:
- Iruma’s “Evil Cycle” personality shift feels too natural, almost instinctive
- He can sit on the Demon King’s throne without rejection
- Visual parallels between Iruma and Derkila appear repeatedly
- His compatibility with powerful magical objects feels unnatural for a human
The deeper interpretation suggests Derkila didn’t die or vanish, but instead reset himself into a human life to understand emotions like greed, fear, and desire. Iruma, in this reading, becomes the vessel that carries that return to the throne.
Theory 2: Iruma Is Not Fully Human
This theory focuses on biology and hidden design rather than destiny. Many fans suspect Iruma is not a normal human at all.
Strange evidence includes:
- Surviving situations that should be fatal
- Unnatural reflexes and evasion ability
- Blood that affects demons and plant growth
- Early interaction with magical phenomena
The idea is that Iruma could be a modified human, an experiment, or a prepared vessel designed for something far greater than ordinary life in the human world.
Theory 3: The Ring (Ali / Alikred) Is Hiding Something Bigger
Iruma’s ring is far more than a tool—it behaves like a character with intent and memory.
Key observations:
| Element | Theory Interpretation |
|---|---|
| Ring Identity | Fragment of sealed intelligence (possibly Derkila-linked) |
| Behavior | Autonomous guidance and reaction |
| Growth | Expands alongside Iruma’s rank |
The biggest mystery is how the ring seems to “know” more than Iruma himself. It doesn’t just assist—it reacts as if it remembers something.
Theory 4: A Third World Beyond Humans and Demons
One of the newer and more intriguing theories suggests that the universe of Iruma is not limited to humans and demons alone.
Supporting clues:
- Mysterious key-based realm connections
- Surreal environments that don’t match demon logic
- Instant suppression of Iruma’s Evil Cycle in certain spaces
This leads to the idea of a third layer of existence—possibly divine or primordial. In this interpretation, Iruma is not just a Demon King candidate, but a bridge between worlds.
Why Sullivan Chose Iruma (The Real Question)
Lord Sullivan’s decision to adopt Iruma doesn’t feel random—it feels intentional.
Possible motivations:
- Following a prophecy about a foreign-origin ruler
- Restoring or completing Derkila’s unfinished plan
- Reshaping the stagnant demon world structure
Rather than adopting a child, Sullivan behaves like someone executing a long-term strategy with Iruma as its central piece.
What Season 4 Will Likely Change
Season 4 is expected to shift the tone from school comedy into recognition, rivalry, and political escalation.
Key developments:
- Iruma taking leadership roles in competitions
- Greater visibility among elite demon figures
- Increasing attention from rival factions
- Rising influence of antagonist forces like Baal
At the same time, Iruma’s personality is likely to evolve—less survival instinct, more ambition, and more awareness of his impact on others.
Final Thoughts: So What Is Iruma Really?
All theories aside, the most interesting aspect of Iruma is how the story refuses to define him too early. He is constantly positioned between contradictions: human yet demon-compatible, powerless yet influential, passive yet constantly rising in status.
Maybe the truth isn’t that Iruma is secretly a demon king reincarnation or a chosen vessel. Maybe it’s simpler and more human: he keeps surviving, adapting, and growing in a world that keeps demanding more from him than he ever intended to give.
And that might be why the story works so well—because Iruma’s greatest power isn’t magic or destiny, but the fact that he keeps moving forward even when the world keeps rewriting what he is supposed to become.
