Return
It's already been 20 years since I fell into this world.
The final battle I had yearned for was far more desperate than I had imagined.
-Kkieeeek!!
Demons with grotesque wings flap about, flying through the sky.
On the ground, the corpses of dead demons formed mountains, and their purple blood looked as if it were recreating the river of the Underworld.
Literally a living hell.
"Heal!"
If it weren't for the Saintess's buffs and healing, I would have long since collapsed, unable to withstand the heat of hell.
'No, more like I'm barely holding on.'
Even with the buffs, I felt like I could be rolling on the ground at any moment.
But I cannot fall.
Because the lives of tens of millions are hanging on our backs.
Gathering my magic power once again, I shifted my gaze to the existence in front of me.
"Surprising. To think that a human capable of opposing me still exists in this world..."
Black armor, a cape, and horns.
Mimicking human things, yet an existence that is definitely not human—the Demon King.
Red eyes that seem to swallow even starlight stare at me.
"But you, too, are human after all. You will meet the same fate as those two."
The Demon King's finger pointed to the ground.
Among the corpses of the demons, I saw familiar faces.
The Dwarf who always protected everyone from the front lines, and the Hero chosen by the Holy Sword.
Both of them were rolling on the ground with their torsos and heads having bid farewell to each other.
'Fucking hell, this is driving me crazy.'
It's not like the Hero and the Dwarf just tripped over a stone and died.
It would be more accurate to say they took the Demon King down with them.
However, the Demon King is alive and well.
Throat slit, heart pierced.
Even after taking attacks that would have killed a human dozens of times over, he keeps regenerating.
'He's just a total munchkin.'
He's got all these broken buffs plastered all over himself.
Meanwhile, I had to roll in the mud without a single isekai buff.
Anyway.
To win, I have to use a different method than before.
And there was only one method that came to mind.
'With this, it might be possible.'
If it's me, who can handle all the magic that exists in this world, I can do it.
And there probably isn't any other way besides this.
"...Saintess."
"Just say the word! The buff will be— Kkuh!"
The Saintess clutches her heart and kneels on the ground.
It's only natural she'd look like that, having used her divine power beyond her limits in such a short time.
I knelt on one knee and stroked the Saintess's hair.
"...Wizard-nim?"
"You've worked hard for the past 20 years."
"W, wait a second—."
"Barrier."
A barrier formed, circling around the Saintess.
Since it also had a soundproofing function, I couldn't hear the Saintess's voice.
All I can see is the girl crying and pounding on the barrier.
She's shouting something, but it doesn't reach me.
No.
"It definitely reached me."
The thing I had to do was one thing, from beginning to end.
Perhaps I was summoned to this world for this very purpose.
"Will you be alright? You, a human, facing me alone."
"Will you be alright? Shouldn't you go say hi to your mother you left behind in hell?"
"Arrogant."
"I get that a lot."
The Demon King raised the greatsword he had been carrying on his shoulder high.
Ominous black-red magic power covers the sky.
Is this what a world where the stars and moon have completely vanished looks like?
However.
"If the stars can no longer shine.
I will create stars."
I plunged the staff, made by cutting down an entire World Tree and compressing it to its limit, into the ground.
At the same time, thick roots grew out, firmly fixing the staff to the ground.
"Take this, my everything."
With those words, a massive magic circle spread out beneath my feet.
Runes of fire shine.
Characters of wind rotate.
A spell known to have reached the realm of gods connected up to the sky.
Hundreds of magic circles, runes.
Every magic I have learned.
A miracle, or perhaps a curse.
A number of spells that cannot be described in words and cannot be fathomed by human eyes were cast.
They all covered the night sky.
They looked like stars.
They were like stars that dedicate their entire lives to shining.
"To think that there would be an existence in this world who reached 'that' realm...!!"
"You've been making slips of the tongue since earlier."
I placed my hand on the staff.
"I'm not from this world."
The way to defeat the Demon King.
It is to burn up my everything and erase my very existence.
Of course, I know the end that will bring.
Now, without even a shred of cover, I will meet the same end as the Demon King.
Well, that's pretty fucking cool in its own way.
Anyway.
"So, let's die together."
I poured all the magic power in my body into the staff, without leaving a single drop.
And immediately after, the stars exploded.
A sensation as if the entire universe had exploded, where nothing existed.
With that as the last thing, my consciousness gradually, faded, away.
**
I naturally opened my eyes to the sound of a noisy machine at my bedside.
The first thing that caught my eye was the ceiling.
It's not a creaky medieval wooden ceiling full of holes.
No bugs crawling around, and above all, it's clean.
It's even painted.
'...Is this a dream?'
I racked my brain, unable to accept the current situation, and tried to trace my memories.
The last thing I saw was the Saintess taking a bath...
No, that's not it, I went too far back.
Right, the last thing I truly saw was light.
The Demon King's body burst, and my body was torn apart too.
Then I must have definitely died.
But the familiar touch of the blanket I feel at my fingertips right now is reality.
That means.
"I'm baaaaack!!"
I don't know why I returned, but anyway, nice!
I tried to let out a roar filled with that emotion, but.
"...Eh?"
The "I'm baaaaack" that came out of my throat was not a familiar voice at all.
It sounded like a young boy who hadn't hit puberty yet.
Anyway, it wasn't my voice.
"Well, maybe it's because I haven't fully woken up yet."
Sometimes this happens.
It was like this when I got slapped really hard during a pillow fight with the Hero.
For now, I got out of bed to taste civilization for the first time in a while.
But.
"Was my bed this big?"
No? There's absolutely no way.
Even if I rolled around for 20 years in a world where beds are luxury items, I wouldn't forget the size and height of my own bed.
Then, could it be.
"...Did I shrink?"
To prove my hypothesis, I ran to the bathroom in the master bedroom.
It's a place that would have taken me three steps if I were my original self, but now it took ten steps.
The sink was too high, so I stepped on a chair I had bought for shampooing a long time ago.
It's a secret that even that wasn't enough, so I had to stand on tiptoes.
Anyway.
I barely managed to reach the mirror.
"...What is this."
I ended up seeing a reflection that was 'me' but not 'me'.
I became a girl.
And I even became a young girl.
If I had been an ordinary-looking girl, I wouldn't have been this surprised.
But my reflection in the mirror was extremely not normal.
My hair, which reached down to my waist, was tied in twin tails.
They say eye color follows hair color, and my eyes were red too.
"It's a dream, right?"
I slowly brought my hand to my cheek and pinched it.
It's soft. Ah, that's not it.
"...Ouch!"
Did I pinch too hard? It hurt a bit.
Feeling pain means it's not a dream.
Then, wait a second, could it be.
"I have to live as a twin-tailed girl for the rest of my life...?"
I grabbed the twin tails tightly with both hands.
I don't know why, but the twin tails felt like they were one with this body.
**
They say ominous premonitions always come true.
"Why, won't, this, come, undone...!!"
I diligently fiddled with the joint of the twin tails.
Then I barely managed to grab the hair tie and succeeded in untying the twin tails.
But after taking my eyes off the mirror for a moment and checking again.
"It's tied again!"
The hair tie is still in my hand, but for some reason, a new hair tie had appeared.
Do I really have to live my whole life with twin tails?
Thinking about walking around outside like this made me a little, no, a lot embarrassed.
That aside, one more question.
"Why are you guys here?"
I spoke to the empty air.
No, to be precise, not the empty air, but the colorful dots floating in the empty air.
That thing they call magic power in this world, and also call magic power in web novels.
Magic power was floating in the air.
"The Earth I know didn't have magic power..."
No, maybe I can see magic power because I trained in that world?
That might be it. Ordinary people can't use magic power, nor can they even see it.
'Wait a minute, does that mean?'
"Can I use magic on Earth too?"
It's not an entirely impossible story.
Because it was common sense in that world that if there is magic power, you can use magic.
Of course, there's no guarantee that common sense will apply here.
But, isn't it better than not trying?
"If I succeed, I'm becoming a streamer right away."
A beautiful girl wizard?
It's guaranteed to be a hit.
A combination that can't fail.
"I should practice magic in a wide-open space, right?"
Doing it in the bathroom is impossible.
Then let's just demonstrate a very simple spell in the living room.
With that thought, I headed to the living room.
And when I shifted my gaze outside the window, I witnessed something strange.
"...What is that."
In South Korea, and in the middle of downtown Seoul at that.
Why is there a tower big enough to slap the grandfather of the Burj Khalifa twice on the cheek...?"