The Legendary Hero

Nero looked at the woman and waited impatiently for the money.

"Uhh… is there something else you need?" the woman asked.

"Where is the money?" Nero asked with a confused and curious look on his face.

The woman pointed her finger at Nero's guild card and said, "There is no way you can carry gold coins worth that amount, so you can use this guild card to debit the coins at any guild in the world; Whenever you want."

"..."

"And you can also directly use this in inns or big shops if they have a similar device," she added.

"..."

'Is this something like bank cards? Now that's interesting. Who came up with such an idea in this fantasy world?' Nero wondered.

"How long has this system existed?" Nero asked the woman, but the woman looked at him as though she couldn't understand Nero's question.

"Who invented these card transactions and stuff," Nero asked in simpler words.