Sasuke Uchiha in Harry Potter

The Hogwarts Express

Sasuke began to remember how he purchased his house while returning from shopping at Diagon Alley.

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Sasuke still lived in a treehouse, but thanks to the products he sold to Borgin, he managed to acquire Galleons, Sickles, and Knuts.

He had another, easier way to make money: taking all the money from the wizards who tried to kill him. The money they had now belonged to the Uchiha.

Inside Borgin and Burkes:

Sasuke: Borgin, can you explain to me again how much the coins are worth?

Borgin: I'll explain it to you again just because you always bring me great products.

Sasuke: You better not lie to me. You know I can go to Gringotts and verify if what you tell me is true, and you know what will happen to you if you try to deceive me.

Borgin still remembered the people who had tried to rob Sasuke. He had killed them all mercilessly.

Borgin: There are 17 Sickles in a Galleon, and 29 Knuts in a Sickle, which means there are 493 Knuts in a Galleon.

Sasuke: Got it, but I have another question. Can't wizards duplicate money with magic?

Borgin: They can't, because the money is monitored by goblins. The money also has magical protection that prevents any magical alteration.

Sasuke: And what if I sell the coins in the Muggle world?

Borgin: Magical money doesn't hold much value in the Muggle world. Muggles don't appreciate the value of gold; they only have these easily torn papers. Also, if you sell wizarding money in the Muggle world, you'll be breaking an international law from the Ministry of Magic. Believe me when I say you would be hunted down by the Ministry.

Sasuke: Thank you for the information.

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In the depths of the woods, Sasuke had gone to his refuge, which was a treehouse.

Sasuke gathered a large amount of Galleons and, over the course of two years, managed to acquire even more. As for the Sickles and Knuts, he decided to keep them stored away.

He remembered Borgin's words that the money was magically protected. He smiled and made a few hand seals.

Sasuke: KATON: RYŪKA NO JUTSU!

The fire hit the Galleons, and Sasuke watched as the coins melted. Since he didn't use magic, no protective spell was activated.

Sasuke took several steel molds and began to melt the Galleons to create several solid gold bricks.

He smiled, for now he would have Muggle money in addition to the magical kind.

The next morning, Sasuke used his Henge no Jutsu to transform into an adult and exchanged the gold for British pounds.

When he went to the bank and showed the gold, the clerk took him to a private room to negotiate privately.

The bank owner came to negotiate in person.

Banker: You're quite lucky, Mr. Uchiha, to have found such a quantity of gold.

Sasuke: Yes, it was a lot of luck.

Banker: I don't know if you're aware, but the bank needs to know the origin of this gold. We don't want the surprise of it being of dubious origin, do we?