The magic bottle was a massive hit. Mimina Trading Company’s insulated container had once been considered a groundbreaking invention, but this magic bottle was said to be an innovation far beyond that.

Not that I invented it, but since this was another world, it didn’t matter. I decided to bask in the glory anyway.

"Fufufu… This will be the perfect way to put Mimina Trading Company in their place after they tried to steal the market share for SkyWolf Mushrooms."

Fleur had a rather mischievous look on her face, but that wasn’t my concern. Technically speaking, this world’s current technology would require earth or wind magic to replicate the magic bottle. Good luck to the world’s magic users.

After the magic bottle, we moved on to board games like Reversi, Shogi, and Jenga. Since I had created samples with earth magic, a quick demonstration was enough to get them interested.

"It’s simple, yet deep..."

They seemed oddly impressed, but for us, these were just the games we had grown up with. It felt strange to have something so ordinary receive such high praise.

Next, we shifted to cooking-related items, but since I wasn’t prepared to cook on the spot, I simply shared a few recipes I knew. Whether the local chefs could properly replicate them was another matter.

However, I was surprised when Fleur reacted to a single word I had casually mentioned.

"Wait… Do you know how to make mayonnaise!?"

She was extremely eager.

According to her, mayonnaise had been developed in the Arclight Kingdom, but its manufacturing process had not been disclosed. The only way to obtain it was through imports, but the export tariffs were ridiculously high. She had been looking for a way to bypass that issue.

"If that’s the case, I can teach you how to make it."

All I knew was that it required oil, eggs, and vinegar mixed together, but that was where Rio came in. Apparently, she had made it at home before being summoned, so she was more knowledgeable about the process than I was.

Tariffs from the Arclight Kingdom didn’t concern us in the slightest. We gladly shared the recipe.

"That said, you’ll need to experiment with ingredient ratios. The ingredients available here seem slightly different from what I’m used to."

"Understood. I’ll have the chefs refine it."

"Please do."

Just as we finished our conversation, tea was brought in. As I took a sip to quench my thirst, I suddenly realized how hungry I was. Talking about food for so long had only made it worse.

"It’s already past noon. I’d love to hear more details, but with all the information you’ve given us, I’d like to take some time to organize it."

"Not at all. You’ve been a great help. It seems like we’ll be making more money than expected, so please use it all for the loans."

"What are you saying? This has been an incredible opportunity for us as well. Everything you’ve shared will be registered under a patent, so rest assured."

So this world had a patent system too. That was convenient. Instead of making a single sale, we could continue earning from it. Not only would this benefit the workshop, but it also meant we wouldn’t have to worry about money in the future.

"The Rashiyu Trading Company will fully support everything that you and Rio have created."

To register the patent and receive future payments, we needed to sign up with the Commerce Guild. Fleur said she would handle everything, so we simply signed our names on the necessary documents.

"I’ll leave the rest to you."

"Consider it done."

At first, Fleur and her employees had been completely overwhelmed by the materials we brought in, but now they were eager to turn everything we provided into profit. They had purchased what they could afford in cash, but most of the high-value materials were being sent to auction due to their rarity.

"By the way, the auction will be held in the Commercial Capital. Would you be interested in attending? If so, I can submit your participation request along with your guild registration."

"We can participate?"

"Yes. Sellers are allowed to attend the auction, but registration is required. Of course, your identity as the seller will remain confidential."

The word "auction" had a very tempting ring to it. I was more than a little curious.

"The Commercial Capital… That’s the city north of here, right?"

Rio’s question snapped me back to reality. Now that I thought about it, I hadn’t even asked where the auction would be held. Originally, we had been heading south toward the sea, but we weren’t in any rush.

"Yes, that’s correct. It’s about two days by carriage from here."

"That’s not too bad. Let’s go."

"Yeah, I’m curious too."

Rio and I exchanged nods. The idea of attending an auction was exciting. Who knew what treasures we might find?

"Understood. I’ll register you both as participants. Also, while we’re on the topic, would you be willing to handle the transportation and escort of the auction items?"

"Transportation and escort?"

"Yes. Given your abilities, we’d feel much more secure."

By "transportation," she probably meant using our storage magic. Transporting our own auction items wasn’t a problem.

But escort duty, huh?

That reminded me—when the Guild Master had promoted us to D-rank adventurers, he had mentioned something about escort requests.