Who is Will Serfort’s father? Wistoria: Wand and Sword

If there’s one mystery in Wistoria: Wand and Sword that keeps the fandom awake at night, it’s the question surrounding Will Serfort’s true origins. The series started as a classic underdog fantasy: a boy with no magic trying to survive in a world ruled entirely by mages. But as the manga goes deeper into the lore of Wis, Mercedes, Finn, and the ancient war against the Celestial Hosts, it becomes obvious that Will is far from ordinary.

And honestly, that’s exactly why this mystery has become one of the best parts of the story.

As someone who genuinely loves fantasy anime with hidden bloodlines and ancient conspiracies, I think Wistoria is building toward something much bigger than a simple “chosen one” reveal. The clues scattered throughout recent manga chapters strongly suggest that Will’s father is tied directly to the lost “Sword” lineage — and maybe even to Finn himself.

So let’s break down the most believable theories, what the manga is hinting at, and why Will’s father could completely change the future of the series.

Why Will’s Father Matters So Much

At first glance, Will looks like the exact opposite of a typical fantasy protagonist. He has no usable magic in a world where magic decides social status, power, and survival. But the deeper the story goes, the more it feels like his inability to use magic normally is actually proof that he was never meant to function like an ordinary human.

That’s where the “Wand and Sword” concept becomes important.

The entire story revolves around the idea of combining two opposing forces:

Wand	Sword
Traditional magic	Physical combat
Mana manipulation	Raw power and instinct
The Mage lineage	The ancient Sword lineage

Will appears to be the first character capable of standing between both worlds. And if that’s true, then his father likely represents the ultimate “Sword” side of the equation.

The Theory That Feels Most Likely: Finn Is Connected to Will’s Creation

Out of every fan theory online, this is the one that honestly feels the most convincing.

The manga repeatedly hints that Finn knows far more about Will than he admits. His behavior doesn’t feel random — it feels calculated, almost like he’s watching the progress of an experiment that took centuries to complete.

Several moments especially stand out:

Finn refers to Will in strangely artificial terms.
He seems deeply invested in Will unlocking his true power.
The story repeatedly references a long-term plan involving Mercedes.

This leads many readers to believe Will may not have been “born” naturally at all.

Instead, he could be a designed existence, created to unite the powers of Wand and Sword into a single being capable of fighting the Celestial Invaders.

And honestly, this would fit perfectly with the darker fantasy tone the manga has slowly developed.

Rather than another generic “secret prince” reveal, Will being an engineered successor would make him far more tragic — and far more interesting.

Wistoria: Wand and Sword Season 3: Release Date, Renewals, and Future Predictions

Mercedes Is Almost Certainly His Mother Figure

At this point, most readers agree that Mercedes has some kind of maternal connection to Will, whether biologically or symbolically.

The evidence is difficult to ignore:

Her influence appears deeply tied to Wis.
Will’s powers resemble ancient abilities linked to her era.
Multiple story elements suggest she protected or prepared him for the future.

The bigger question is not whether Mercedes is connected to Will.

The real question is: who stood beside her?

That’s where the legendary Sword theory becomes incredibly important.

The Forgotten Sword Hero Theory

This is probably my personal favorite theory because it feels the most “anime” in the best possible way.

Many fans believe Will’s father was a legendary Sword warrior from the ancient age — possibly the strongest Sword user in history.

The manga’s references to old stories, heroes, and forgotten battles don’t feel accidental. In fantasy anime, ancient fairy tales almost always hide real historical events, and Wistoria clearly follows that pattern.

Here’s why this theory works:

The “hero and witch” story parallels Will and Mercedes.
Previous Swords existed before Will.
Will’s combat instincts feel inherited rather than learned.

If true, Will may literally be the heir to a lost bloodline erased from history.

And honestly, that would explain why his physical abilities feel so unnatural compared to every other character in the series.

The Wild Theory: A Celestial Father

Now this one is definitely crazier, but I can’t deny it’s interesting.

Some fans think Will’s father might actually be connected to the Celestial Invaders themselves.

The main reason? Will’s abilities don’t fully resemble either magic or traditional Sword powers.

His connection to mana feels almost alien:

He absorbs energy differently.
His body reacts abnormally to magical systems.
Certain powers seem closer to “consumption” than casting.

That has led to speculation that Will may carry blood from both humanity and the enemy itself.

Personally, I think this theory is less likely than the Finn/Sword lineage theories — but if Wistoria wants a massive late-game twist, this would absolutely deliver one.

Could Finn Be Will’s Biological Father?

This is the simplest interpretation, but simplicity doesn’t automatically make it wrong.

Finn’s obsession with Will goes beyond curiosity. There are moments where his actions feel strangely paternal, even when hidden behind manipulation.

Fans also point out:

Finn’s age is mysterious.
He possesses knowledge no one else has.
Will shares traits linked to Finn’s lineage.

If the manga eventually confirms Finn as the literal biological father, it wouldn’t be shocking at all.

But personally, I think the story is aiming for something more complicated than standard parenthood.

The Time Travel Possibility

Anime loves time manipulation, and Wistoria already has enough ancient magic lore to make it believable.

One especially suspicious detail is that Will and Elfaria appeared together under mysterious circumstances. Combined with Will’s fragmented memories, it creates the possibility that he was sent into the future intentionally.

This would mean:

Mercedes knew disaster was coming.
Will was hidden until the correct era.
His true identity was sealed for protection.

And honestly, that sounds exactly like the kind of emotional reveal this series would use near its climax.

My Personal Theory After Reading the Manga

If I had to bet on it right now, I’d say the truth is probably a mix of several theories.

I don’t think Will has a “normal” father in the traditional sense.

My guess is:

Mercedes provided the magical lineage.
The ancient Sword hero provided the physical lineage.
Finn acted as the architect who made the entire plan possible.

That would explain why Will feels less like a regular person and more like the final answer to a centuries-old war.

And from a storytelling perspective, it fits perfectly with the title Wand and Sword.

Will isn’t supposed to choose one side.

He is both sides.

Final Thoughts

The mystery surrounding Will Serfort’s father is one of the strongest aspects of Wistoria: Wand and Sword right now. Instead of rushing the reveal, the manga slowly layers hints through mythology, character dialogue, and ancient history.

That’s why the fandom discussions have become so addictive.

Whether Will turns out to be: