"Alright everyone, just wait in the hotel for a couple of days. This guy is going to go earn some money."
Ah, is this the weight of being the head of the household? The back of a man heading out alone to earn money!
"Master, you do know that you're currently shorter than I am, right?"
Cheep-cheep!
Ardeura and Deek stared at me as if my seven-year-old self, speaking with my eyes closed and arms crossed, was a truly pathetic sight, but Harry's eyes were sparkling.
"Have a safe trip, Master!"
Indeed, the gravitas of a master is a great thing. I was quite pleased with how my one and only disciple revered me.
Since it wouldn't do to bring others along on such a dangerous... no, official, matter, I had everyone rest at the hotel and headed to Gringotts alone.
"Alright, time to go conduct a Gringotts security consultation!"
And with a wave of the Elder Wand, I was instantly in Diagon Alley.
Entering Gringotts itself was remarkably easy.
I just had to disguise myself as any random person who had come to their vault and use their key.
I held out the key of a wizard who was probably drunk and asleep by now and said.
"I'd like to access my vault."
"Ah, of course, sir."
The goblin, who put me on a mine cart without a single check after seeing the key.
It was too easy.
There was the issue of my disguise being dispelled when the cart passed through the waterfall that negates all magic, but that wasn't a major problem either.
Snap. Just before we reached the waterfall, I snapped my fingers.
At the snap, the goblin's eyes suddenly became intensely itchy, and he rubbed them.
In that brief moment, I passed through the waterfall, returned to my seven-year-old form, and then transformed again. Voila. No problem at all.
And so, the goblin, without a shred of suspicion, reached the vault and said to me.
"Sir, Vault 731."
"Ah, thank you for guiding me. But unfortunately, this isn't my destination."
"Pardon?"
I snapped my fingers and cast a paralysis spell on the goblin. I didn't even need a wand for something like this. So easy.
I carefully lifted the goblin, who had frozen solid without a single scream, from the cart and leaned him against the vault wall.
I was here to conduct a security consultation, not to kill an innocent goblin who was just doing his job.
And since I was genuinely in the mood to give some consultation, I waved my hand and carved large letters onto a section of the wall.
[Consulting Point 1: What kind of bank in the world takes a client all the way to their vault in a cart with only a single guide? Reduce client entry into the vault area and send them down with at least a few more security guards.]
Hmm, that should be easy enough to spot.
With a grin, I walked along the cart rails.
After passing the 700-series vaults, which were located on a relatively high level, a vast open cavern and the connecting mine rails came into view.
In that case, what I had to do was very simple.
After all, the vault I was aiming for was far below, wasn't it?
After a light running start, I leaped into the vast cavern.
With a feeling of being lifted up by an invisible force, I skydived at high speed toward the lower-numbered vaults.
Accelerating faster than the fastest Quidditch broom, I fell like a meteor toward the floor of Gringotts.
After lightly adjusting my trajectory with a non-verbal wind spell, I soon reached the underground level where the Lestrange vault was located.
Hmm, it's not as deep as Vault 12, but it's close to the bottom.
Aresto Momentum.
Landing lightly on the ground, I thought of more advice for the goblins.
Let's write a second point on the wall.
[Consulting Point 2: Why in the world are all the vaults connected to this one space? This makes it easy for someone who came to see a 700-series vault to just head to an underground vault like I did. Separate all the vaults!]
I took a look around and was able to confirm my target, the Lestrange family vault. There's another vault next to it. Malfoy... family?
I feel like I've heard the name somewhere, but I couldn't quite remember.
It seems they weren't a very famous family ninety years ago.
The vault was, of course, made of goblin-wrought silver. It was a metal with extreme anti-magical properties, to the point that it was one of the only metals with a strong resistance to ancient magic.
Of course, even so, a wizard of my caliber had many ways to break through it.
I had plenty of time, and since this wasn't an experience I'd have often, I took a leisurely look around and found something interesting.
Oh, there's a dragon, too.
But it seemed to be blind, as it couldn't see me properly and just kept looking around.
Looking closely, I could see its body was bound in chains, and it clearly wasn't being treated very well.
Poppy, who hated poachers, would have a fit if she saw this.
Come to think of it, they used goblin-wrought silver to tame dragons back then, too. Looking at how they were treating this dragon, it seemed the goblins hadn't changed much in ninety years.
The dragon was an albino, its entire body a stark white. Though I had handled many magical beasts, it was my first time seeing a dragon, let alone an albino one, so I couldn't help but be interested.
Hmm, maybe I'll take it with me later as a souvenir of my Gringotts visit.
"I hear a sound over there! Who is the intruder!"
Just then, a shrill voice echoed from somewhere. A goblin's voice.
I turned my head to see goblins shining a light on me. Did they send trackers as soon as they saw me jump from the mine cart?
Hmm, they got here pretty fast. Not much to improve on in this area. Their work process gets a passing grade!
"Who am I? I am The Unknowable One."
The goblins' faces hardened at my playful answer, and they shouted.
"There's a limit to jokes! Do you not understand your situation!"
No, I'm serious.
One of my nicknames was, in fact, 'The Unknowable One.'
Back before I had made a name for myself in the wizarding world, when I was just a student.
The only ones who would have known my name were, of course, Dark Wizards and the like.
And among them, the ones who would have known my name were not small fry, but the big shots.
My exploits were so spectacular that I was something of a celebrity in their circles.
So what happened to all the people who knew me, that is, all the high-ranking villains? They all died, of course.
So, at some point, the nickname that spread among the Dark Wizards was 'The Unknowable One.'
Of course, after I became famous, it was a fairly well-known moniker throughout the wizarding world, contrary to its name, but I can't believe no one knows it now.
It's only been ninety years.
Feeling slightly offended, I replied.
"And what is my situation?"
"The situation of being arrested on the spot as a criminal, of course. You'll rot in Azkaban for all eternity!"
I scoffed in disbelief. Dream on.
"Arrested? You'd have to catch me first."
Of course, looking at the numbers, I could understand their confidence. The number of goblins surrounding me had already exceeded several dozen.
Well, they're just trying to do their jobs with a sense of professionalism, so in a way, it's almost admirable—
"Hah, this is why I hate wizards. Such petty, arrogant creatures. We can't hand you over to that untrustworthy wizards' Azkaban! We'll just kill you right here."
At those words, another goblin chimed in.
"You have no idea how funny it is when arrogant fools like that die screaming with a knife in them. The old days, when we used to hunt wizards, were good. It's been a while since I've seen wizard blood."
What did you say?
My expression changed completely as I listened to the goblin.
So, right now, that goblin over there is being a species-ist and bragging about killing humans? In front of me, Aisen Knightly?
Nah, surely not. It's just these particular goblins, right?
I thought this and looked around, but not a single one showed any sign of disagreement; they were all smirking as if it were the most natural thing in the world.
Wow, look at these guys.
"Hah, it seems my name really has been forgotten in ninety years."
I took out my gleaming Elder Wand from my robes. Ah, I really didn't want to use my wand for this.
Yes, a good idea came to mind. Let's teach the goblins of Gringotts a very big lesson.
"I forgot to mention this during my security consultation. Never, ever, hire bigots as employees."
A lesson that very bad things happen when you hire bigots.
One of the spells that earned me the moniker 'The Unknowable One' was Transfiguration.
A spell that could transform things into a variety of objects that an ordinary wizard would never dare to attempt. It was, of course, a modified version that used my talent for ancient magic.
The result of enhancing Transfiguration with ancient magic was the ability to transform things into explosives.
Thinking back on it now, it was such a poor use of imagination. To think that the most heinous thing I could imagine was a barrel of black powder.
Well, what could I do? The only explosive back then was an early form of dynamite that had been invented less than twenty years prior.
They didn't even have smokeless powder back then.
But the situation now was different.
Spending nearly a year in the Muggle world, I had explored a vast amount of knowledge.
Muggle knowledge explained this world remarkably well without magic.
I had learned Newton's laws of physics as a child in Muggle school, but in the last hundred years, the thing called 'science' had made incredible progress.
Beyond electromagnetism and classical mechanics, to quantum mechanics and the theory of relativity.
The laws of the world, seen from a completely different perspective than that of wizards, offered a new point of view even to a great wizard like myself.
But, unfortunately.
As if to prove that Muggles, too, are humans with malice in their hearts, the things they created with that brilliant knowledge were, in the end, weapons.
And now, I, too, understood the principles of those weapons very well.
"Security that collapses due to bigots. Perfect."
"What are you talking about, wizard! Stop your nonsensical chatter and give me your neck!"
Toward the goblin, who was still jeering, oblivious to his own future, I swung the Elder Wand.
—Conversio, 'Tsar Bomba'.
[T/N: Conversio (콘베르시오): A custom spell name, likely derived from the Latin "conversio," meaning "a turning" or "transformation." It appears to be Aisen's personal, high-level Transfiguration incantation.]
[T/N: Tsar Bomba (차르봄바): The name of the most powerful nuclear weapon ever created by mankind, a hydrogen bomb developed by the Soviet Union. By using this name, Aisen is indicating he is transfiguring the goblin into the magical equivalent of an H-bomb.]
Toward the goblin, who had been instantly changed by the Transfiguration spell without leaving him time for a single death cry, I muttered and swung my wand in a grand arc.
"Remember this, you treacherous goblins. Aisen Knightly has returned."
As if conducting a magnificent funeral dirge, my arm swung wide, and it flew in a great parabola, accelerating as it went.
And finally, like a battering ram striking a great gate, it collided with the wall of a vault, ornately embossed with goblin-wrought silver.
A very small sun bloomed in the depths of the earth.
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Guys please give some power stones if you like this story really helps a lot.