The day after the banquet.

Jin woke up refreshed and looked out of the window of his room at the dawn sky. There was a message,

"Jin-kun, are you awake?

Sergey came to check on Jin. He looked like he had a hangover and a headache, so he told Reiko to put and on his face,

"Oh!　I feel refreshed!　It's amazing!

He was overjoyed.

"By the way, is there a doctor ...... in the village?"

"Well, I'm sorry to say that we don't have our own healer. He comes from the royal capital for two days a month. ......

"I see."

Jin made a note in his mind to <.

Later, before breakfast, Jin looked around at the villagers suffering from hangovers.

"Ugh, my head hurts. ......"

"Reiko, please detoxify my head."

The pain is relieved by removing acetaldehyde, one of the causes of headache.

"Yes, father. <>"

And if you lightly adjust yourself with <>...

"Oh, I feel better now. Thank you, Jin-san. ......"

No wonder my head feels clear.

As expected, we couldn't go all over the village, so we stayed in the neighborhood of the mayor's house.

Later, after having breakfast with the mayor and his wife and Helga, Jin asked, "What are you going to do today?

The chief asked Jin, "What are you going to do today?

The chief asked Jin, "What are you going to do today?

"I would like to go around the village.

I would like to go around the village.

"It won't look like it did when I was there, but I'd like to help finish the restoration ...... if there's anything I can do.

"That would be great. I'd be happy to help if I can. ...... Helga, can I trust you to show me around?"

Yes, I can. I'm sure that Katya will be here later and we can show you around the village. I'll show you around the village. ......, although I'm sure that Katya doesn't know much about the new village either.

In that sense, Katya will be in a position to be guided around the village.

"So, first of all, is there anything wrong with this place?　No, I'd prefer not to have any.

When Jin asked this, the mayor replied,

"Oh, ...... it's just a small thing," he prefaced.

The mayor prefaced his question with the following words,

"The stairs to the second floor creak. It's fine during the daytime, but at night it might wake up the sleepers.

"I see. May I take a look at it?

"Yes, by all means.

So, Jin investigates the staircase.

"Ha ha, this is ......."

In general, there are several causes of squeaky floors and stairs, but the root cause is deflection of the planks.

When the weight of the board deflects and returns, it rubs against the board and makes noise.

Deflection cannot be eliminated, but it can be reduced by various means.

For example, thicker planks and reinforcing materials can be used.

The staircases of the village head's house had rather thin planks. This may be the result of saving some lumber because of the need to build many buildings at once.

Jin explained his diagnosis.

"Oh, so that's the reason. I guess it can't be helped then."

Sergei, the village head, half gave up, but Jin denied it.

"No, no, there are still ways to do it.

He then invoked his engineering magic.

"<>".

The most versatile of all the reinforcement types. It is a magic that forms a network of <> between molecules and increases the overall bonding strength.

Its elasticity is the biggest difference from .

Jin's lasts semi-permanently. Moreover, the effect is .

"It's done."

I see.

Let's try it!

Helga, who had come with me, ran up the stairs and came down again, but there was no creaking sound.

"Wow, that's great!　Thank you, Jin-san!"

"Is there anything else?"

Jin asks Sergey. Sergey thinks for a moment before answering.

"Well, there are some minor things like ...... the door gap is a little wide or the drawers of the wardrobe are too tight, but there are no major problems.

"I see. Let's fix it."

"You heard me!　It's not a big problem, is it?

Yes, it is. Yes, but even such small defects can become bothersome after long use.

Jin then adjusted two door gaps and three drawers of the chest of drawers.

"Thank you, Jin."

"Thank you, Mr. Jin."

Both Sergey and Helga were pleased.

"Well, I'll go and get Katya, then I'll show you around the village.

"Yes, please."

Good morning!

Good morning, Mr. Jin.

Good morning.

After about five minutes of waiting, KaChea arrived with Helga.

"Well, Jin-san, let's go for a tour of the village.

"Yes, please."

Jin, Reiko, Helga, and Katya headed for the south of the village.

"This area was the first to be hit.

Helga said, "I really thought it was over at that time.

"Some people still dream about it," she said.

"Well, ...... I guess so."

At this point Jin <> and filled in a second note in his mind.

"Hey Jin, thank you for yesterday.

"Jin-kun, are you making the rounds?"

Everyone I met, everyone I passed, called out to Jin.

As he walked along, he came to a wheat field.

"The fields are south of here, aren't they?

The wheat field was lush and green.

"Is there a problem?"

"Yes, there is. There is a waterwheel to grind flour."

"A waterwheel. ......"

When they make flour, they grind it with a millstone, which is powered by a waterwheel.

"There's only about a month left until the harvest, so I thought we could do something before then.

"You have a river where you can set up the waterwheel, don't you?

"Well, they used to use a waterwheel until they burned it down.

That's true.

Jin, as expected, has never built a waterwheel.

Or rather, he does not know how the rotation of the waterwheel is transmitted to the millstone.

He then wondered if there was anything he could do to help.