Over the course of two full days, Jin and his team remodeled the boat.

First, a pilot's seat was installed so that the boat could be steered with a wire cable.

Then, the output of the left and right air jets could be adjusted with levers.

The intake ports are protected by wire mesh as a safety measure and to prevent the intake from sucking in unnecessary objects. And then..,

"Jin, we can't fall back if we keep going like this, can we?

Eira's comment, the first prototype was attached to the bow in the opposite direction for the purpose of retreating.

The entire wooden boat was reinforced with a few bronze fittings to complete the project.

"Wow, this is great!"

Paelová Sondovík, still in the village, exclaimed with satisfaction as he took a test ride on the completed .

"Well done! Jin, Eira, Kacea."

From this time on, Paelova began to call him "Jin. Jin was relieved that Paelove was becoming less cautious.

"If we build a ship of the same type as this one, we will be able to transport goods by water!

The Principality of Mercana is developing roads and villages along the mighty Norcina River.

The lack of waterfalls along the river has not helped the development of water transportation.

This is because they did not take the time to travel up the river.

The only way to go down was to ride the current of the river, but to go back up required power or labor, and in this developing country, the roads that had already been completed were used more often than not.

However, the developed by Jin and his team is expensive to build, but its maintenance cost is not much different from that of ordinary boats, and it can travel up the river at a speed only slightly slower than that of a carriage. And when they return, they can run almost twice as fast as horse-drawn carriages.

"Okay, let's try mass-producing them.

And because it does not use any special technology, it is suitable for mass production.

The pace of production, however, is about one ship every five days.

* * * * * * * * * * * * * *

Back in Lawhon, Jin and the other three were given a special reward of 50,000 tokels (about 500,000 yen) apiece.

"It's like a ...... dream."

This was more than the monthly allowance of 10,000 Tall. Katya was very grateful, even though she had not done much.

"That's not true. You've done a lot of calculations for me, and you've helped me a lot.

"Is that so ......?"

"Yes, it's true."

Jin explained that if you make something on a hunch without doing any calculations, you will have to rework it, and the biggest problem is that you will often end up with something that others cannot copy.

"I think I might understand ...... somehow."

"Yes."

Jin, too, has learned something very clearly after working here.

"The importance of going back to the basics, what is the purpose of making things, and what is ......."

In particular, the last point, "consideration for mass production," is something that Jin has long since forgotten.

Jin was once again aware of a different kind of fun than making a masterpiece.

"Hey, Jin, now that we have some extra income, let's go out to eat.

"Yeah, sure."

Jin was in his room thinking about something when Eira called out to him from outside the door, and he got up to answer.

When he opened the door, he found Katya next to Eira. She seemed to have adjusted to the place.

It's still light out, isn't it?

"It's summer. ...... I know a great place. I think Jin will like it.

I'm looking forward to it.

Jin and Ka-cea followed Eira as she walked swiftly.

Eira led Jin and Katya to a small store in an alley near the outskirts of town.

"Welcome!

The interior of the store was somewhat Japanese in style.

I made a reservation for you.

Yes, we have been waiting for you. Please come in. We have a private room ready for you.

The waiter greeted the three of us in a polite manner and led us to the back of the restaurant.

"We have a private room here. You have to take off your shoes, which is a pain, but the atmosphere is very relaxing.

"Take off your shoes?"

"Take off your shoes?" "Yes. Here, here is where you take off your shoes. The waiter will take off your shoes and put them in the shoe box for you.

EIRA points to the shoe rack.

"Interesting."

Katya is the first one to take off her shoes and go through the fish tank to the back. Jin and Eira followed her.

"This way, this way.

We walked through the wooden corridor and crossed the hallway. The courtyard seemed to be much larger than it looked from the outside.

The three of us were shown into a private room that looked like a detached house.

"May I bring you some food right away?"

"Yes, please.

"Yes, sir. Please make yourself at home."

The waiter bowed and returned.

The private room is about six tatami mats in size, with a wooden floor. There is a zataku (a Japanese low table) and a zabuton (a Japanese cushion).

"This is nostalgic, somehow.

"I thought so.

Eira muttered and sat down on the cushion.

Katya blushes a little and tries to imitate him, so Jin stops her.

"Don't force yourself, Katya, it's okay. You can sit on your side or on your duck.

"What is duck-sitting ......?"

"Like this."

Jin actually sat down and showed them. The duck-sitting is to sit on your buttocks from the knees down, from an upright position. < or .

"Oh, my God. ...... got it?"

It was hard for Jin, who had a hard body, to sit on the ducks for a long time.

"Yes, like this."

But Katya sat down easily.

"Oh, like this?"

Eira tried to imitate her. But it seemed to be a little difficult to sit down,

...... this is better than this one."

In the end, Eira sat down again on the floor.

Jin also sat on a hut.

"Thank you for waiting.

Just then the food arrived.

The waiter put down the food for three people,

"Please ring this bell if you need something or if you want to order something else.

He put down the handbell and left.

"Come on, let's have a toast!"

Eira pours a drink into Jin and Ka?ea's glasses.

It is clear with a slight yellowish tinge and smells like fruit.

"Here's to our team's achievement!

"Cheers!"

They make a toast and sip from their glasses: ....... And then.

"...... is this alcohol?"

I thought it was juice, but was surprised to find it was sake,

"...... Ginjo-shu?"

Jin was surprised in another way.