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Around the Chimera Ant arc in _Hunter x Hunter_ , I have seen and understood
how Gon would have to train for such a long time frame to have his hair be
that long. But, Illumi also has long flowing hair.

![](https://i.stack.imgur.com/ODhvsl.jpg)

Does this mean that Illumi has done something similar? Or maybe has Illumi
just had a ton of bloodlust, and his hair went straight up?


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hunter-x-hunter
Why is Adult Gon Freecss' hair so long? Why is Illumi's hair long?


It has been a while but I will try to answer with respect to the discussions
held during that period.

First I would like to point a golden rule: **Correlation doesn't imply
causation.** If Adult Gon and Illumi both have long hair it is _NOT necessary_
they have it for the same reason.

Example: [![enter image description
here](https://i.stack.imgur.com/B1Ip4.png)](https://i.stack.imgur.com/B1Ip4.png)

Illumi has long hair because his **character design** was meant to be that
way. He was meant to be introduced as a very creepy, gender-fluid character
who could easily dominate the "imperturbable" Killua. The hair design gave
author to do a lot of things with Illumi. [![enter image description
here](https://i.stack.imgur.com/s88Md.jpg)](https://i.stack.imgur.com/s88Md.jpg)

You've arrived at the reason for Gon's hair being long correctly, I believe.
During Gon's transformation into what Killua considers "How he would appear
after years, if not decades, of training", we also notice that his hair has
grown absurdly long. This implies how much of time he would need to spend
training to improve his Nen Ability.

To end with this is an old image with Illumi's character design (Hair). I'm
not sure what does the Japanese text says.

[![enter image description
here](https://i.stack.imgur.com/eCACf.jpg)](https://i.stack.imgur.com/eCACf.jpg)

**Disclaimer:** Please Note, I know this answer is **very opinionated**
without author notes to back it up. It is drawn from discussions during the
original manga release which I have not tracked. In this case its the best
answer to the question I could think of.

Feel free to suggest ways to improve or any flaws in the train of thought, I
might have missed. I also haven't followed HxH in a long time so any new
information is very helpful. Cheers!


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For Illumi, I think he just let it long.

In Gon's case, I have a theory for that. When Gon was learning about nen with
Killua, their teacher (I forgot his name) said that the nen is an energy that
not used just for fighting; the body cells use it to reproduce. It's an energy
that can also be used by the body to grow. That's why there's some nen
channels that allow just an amount for the person to use, so some energy can
be stored for the body to use to stay alive.

So when Gon was fighting Neferpitou, he became angry, making him careless
about what would happen for him if he could get revenge from her. He said to
Killua to not worry because he didn't care anymore about his life if that
meant she's gonna die (that scene with black and white). So he made a deal
with himself to use all his nen, breaking those channels, and thus all the
body parts and cells got a lot of energy, making them grown so fast. That's
what happened to his muscles, they got bigger and bigger, his hair got longer
than before.

(PS: I don't read the manga.)


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Illumi's hair is naturally long.

For Gon, he wanted stronger nen power to defeat Pitou, so he put a nen
restriction to lose his nen and to gain strength to beat her. His nen made his
body grow into an adult, and even his hair grew to that many years also.
That's why it's so long like it hasn't been cut for so many years.


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A transformed Gon would be around his 30's since decades of training could
mean more than one decade, meaning he could have been aged 20+ or 30+ years.
But he looked young, so I don't think he was in his 40's, meaning it's simply
what Gon would look like in a 20+ time skip without cutting his hair. I assume
Gon is 35 years old when he transformed since he was 14-15 by the end of the
ark.

Y'all are overthinking it, but the designed could have been given to him
because hair symbolizes physical strength and virility; the virtues and
properties of a person are said to be concentrated. In some circles, long hair
on men is seen as a symbol of power and freedom.

If you ask me, Gon fit all these examples, as when he fought Neferpitou he was
concentrated and he was also free as he did not care about his nen or life,
only revenging Kite.


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So I could be wrong, but I have a bit of a theory as to why Gon's hair had
gotten so long in that episode where he transformed. As Gon starts
transforming, you'll notice there are a lot of back-and-forth cut shots
between Gon, and all of the candles within the hideout.

I think that it could be being used as a metaphor. My thoughts being that the
length of Gon's hair represented the amount of time he was being allotted to
use the newly borrowed power. His hair flowed around kinda like a flame does
off the wick of a candle.

As the fight goes on, you'll notice Gon's hair gets shorter. If I remember
correctly, there is a scene in which Gon takes one last look back at Killua
before delivering the final death blow to Pitou's corpse. In that scene,
you'll see Gon's hair is back down to its normal length.

Just a thought anyways.


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This has nothing to do with what we are saying, but if Gon is a god as an
adult, what about Killua? What if there will be a new form of godspeed called
deity speed or something?

I do think Gon will learn nen again. All that Nanika did is make him a normal
human and any human can learn nen, that's what Wing said. So, all these means
is Gon will have to restart his nen training. He'll most likely get back to
the level he was because of knowledge of the basics. He can have his father
reteach him. Let's not forget Gon's 1 in 100,000,000 talent. Wing said Gon
would master ten in a week after all.

Lastly, the reason Gon's hair grows long is because by using all his nen and
damaging his body, Gon was able to speed up his growth since aura/nen is life.
Increasing his aura so fast and by a huge amount granted him fast growth,
which means long hair that hasn't been cut in decades since adult Gon is in
his 30s.


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