The Hidden Rivalry: Luke Notos Greyrat’s Loyalty and Conflict with Rudeus in Mushoku Tensei
In Mushoku Tensei: Jobless Reincarnation, fans usually focus on the overwhelming growth of Rudeus Greyrat—the reincarnated shut-in who slowly transforms into one of the most influential figures in the world. But if you look beyond the main character, one of the most underrated and surprisingly deep characters is his cousin, Luke Notos Greyrat.
Luke isn’t the strongest knight. He isn’t the smartest strategist. And compared to monsters like Eris Boreas Greyrat or world powers like Orsted, the Dragon God, he’s honestly pretty average.
But that’s exactly why Luke’s story hits so hard.
His rivalry with Rudeus isn’t about power levels or heroism—it’s about loyalty, insecurity, and what it means to protect someone when you’re surrounded by legends.
The Weight of the Greyrat Name
The Greyrat family in the Mushoku Tensei world is famous… and not always in a good way.
The Notos branch, where Luke comes from, has a long reputation for two things:
- Exceptional swordsmen
- Legendary womanizers
Even Paul Greyrat, Rudeus’s father, carries that reputation.
Luke grows up in the royal capital of the Asura Kingdom, trained from childhood to serve one person: Princess Ariel Anemoi Asura, the princess he’s sworn to protect.
Meanwhile, Rudeus grows up far away in a village, learning magic on his own.
This difference shapes how Luke initially sees him.
To Luke:
- Rudeus is the son of a scandalous noble.
- He’s an unpredictable mage.
- And worst of all… he suddenly appears around people Luke cares about.
From the beginning, Luke treats him with suspicion.
The Sylphiette Problem
The real tension starts when Rudeus enrolls at Ranoa Magic Academy.
At this point in the story, Luke and Ariel have already spent years in exile, protected by a small circle of loyal allies. One of the most important members of that circle is Sylphiette, disguised as “Fitts.”
Luke had been watching over her and fighting beside her for years.
So when Rudeus shows up?
Luke immediately assumes the worst.
From his perspective, Rudeus looks like:
- A potential womanizer who might break Sylphy’s heart
- A political rival within the Greyrat family
- A wildcard mage who could disrupt Ariel’s plans
Yet this is where Luke proves he’s more than just a jealous cousin.
When he realizes how deeply Sylphy loves Rudeus, he steps aside.
In fact, he even helps them.
One of the funniest and most memorable moments in the series is when Luke provides the aphrodisiac that helps Rudeus overcome his infamous condition. It’s awkward, hilarious, and oddly wholesome.
For a while, things settle into an uneasy peace.
But that peace doesn’t last.
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The Hidden Enemy: Hitogami
Everything changes because of Hitogami, the Man-God.
In the world of Mushoku Tensei, some people have strong destinies that are difficult to manipulate. Others don’t.
Luke belongs to the second group.
Hitogami begins appearing in Luke’s dreams and slowly plants doubts in his mind.
The manipulation works because it targets Luke’s deepest insecurities.
Luke’s Biggest Fears
- He’s not strong enough. Compared to fighters like Eris or Rudeus, Luke feels painfully average.
- He’s replaceable. Ariel now has allies far stronger than him.
- Rudeus might betray them. After all, Rudeus is secretly working with Orsted—the terrifying Dragon God.
To an outsider, that situation really does look suspicious.
Hitogami simply pushes Luke to the conclusion he fears most.
Rudeus will eventually lead Orsted to kill Princess Ariel.
And Luke decides he must act.
The Moment Luke Almost Became a Villain
The confrontation during the Asura Kingdom arc is one of the most intense moments in the entire series.
Luke takes Princess Ariel hostage.
At first glance, it looks like betrayal.
But when you look closer, the scene becomes heartbreaking.
Even while threatening Ariel, Luke uses the blunt side of his blade.
He physically cannot bring himself to hurt her.
His actions aren’t driven by ambition or hatred.
They’re driven by absolute loyalty.
He truly believes he’s saving her life.
Meanwhile, Rudeus is forced to face an uncomfortable truth.
Working with someone like Orsted makes him look terrifying to normal people.
The real villain here isn’t Luke.
It’s the information gap that Hitogami exploits.
What Happens to Luke After the Conflict
Once the truth comes out, Ariel doesn’t abandon Luke.
Instead, she reaffirms her trust in him.
Not because he’s the strongest knight.
But because he’s been by her side from the beginning.
His future ends up looking very different from Rudeus’s.
| Character | Role After the Arc |
|---|---|
| Rudeus Greyrat | Hidden powerhouse supporting Ariel |
| Luke Notos Greyrat | Head of the Notos family |
| Ariel Anemoi Asura | Future ruler of Asura |
Luke eventually leads the Seven Knights of Asura, building his own legacy rather than living in Rudeus’s shadow.
And in a strange twist of fate, the original timeline of the story had a completely different destiny for him.
Without Rudeus’s reincarnation, Luke was actually meant to marry Eris.
Rudeus unintentionally rewrote Luke’s future.
Maybe that’s why their rivalry feels so personal.
Why Luke Is One of the Most Human Characters in Mushoku Tensei
Many characters in Mushoku Tensei are extraordinary.
Rudeus is a genius mage. Eris is a sword prodigy. Orsted is practically a god.
Luke?
He’s just a loyal knight trying to keep up.
And that’s exactly what makes him compelling.
He represents something rare in fantasy stories.
An ordinary person struggling to stay relevant in a world of monsters and legends.
He doubts himself. He makes mistakes. He even turns against the protagonist for a moment.
But in the end, Luke proves something important.
Strength isn’t always about power.
Sometimes it’s about standing by the person you swore to protect—even when a god is whispering in your ear.
And honestly, that might make him one of the bravest characters in the entire series.
