Dawn has broken and morning has come to Horai Island.

The time was 6:00 a.m. It was still dark at this time of the year. It was still dark at this time of the year, but Marcia and Rodrigo had not been able to sleep well and had come outside. They were greatly surprised to see the laboratory.

"Wow, ....... This is a laboratory."

It is a solid stone structure with three stories above the ground.

"Jin-dono has inherited another extraordinary thing.

And when he saw Jin's house, he said,

"It's an unusual structure, isn't it?

"Hmm, what is that on the roof?

What is that on the roof? I guess he is a person who is involved in manufacturing.

"Oh, good morning, Marcia, Mr. Rodrigo."

"Oh, good morning, Jin."

Jin, who was early in the morning, called out from behind them.

Jin-dono, good morning.

You two are up early.

"Yeah, I couldn't sleep in after all..."

I understand how you feel. Did you wash your face?

Yes, in the sink.

A dug well at the end of the garden. Clean water always trickles out and flows into a small pond, which is also good for drinking.

"Well, let's take a bath in the morning and have breakfast afterwards.

"Yeah, that sounds great!"

And it's 7:30 a.m.

Jin, Elsa, Marcia, Rodrigo, and Meine have breakfast.

White rice, wakame seaweed miso soup, grilled dried horse mackerel, and oshinko (Japanese pickles).

"Mmm, delicious. Please give me another one."

"Delicious. More!"

They seemed to like it so much that they both ordered more.

Now it was time to demonstrate to Marcia and the others.

First, we moved to Tatsumi Bay.

"Oh, the sea is so beautiful here!

Marcia squinted her eyes. The destroyer, Stream 1, came in front of them.

"Oh!　This is a trimaran!

Rodrigo's eyes widened.

"And it's made of metal, Dad!

Marcia exclaimed when she saw the hull.

"Come on, try it!"

Of course!

The destroyer has a capacity for 10 passengers. Jin, Reiko, Elsa, Marcia, Rodrigo, and Arrow get on board. Marine 1 piloted the boat.

"Well, it seems to be stable after all.

Rodrigo commented as he climbed aboard. Marcia is silently observing the boat.

"Come on, let's go!

With Jin's voice, the Stream 1 was launched.

"Oh!"

Rodrigo shouted at the acceleration.

"This thing's propulsion system is a development of the Aqua Thruster, the Magi Water Jet, a magical water propulsion system. Isn't it fast?"

"Yes, yes, it's fast!　Jin is still Jin!

Marcia cheers. Stream 1 exits Tatsumi Bay and heads out to the open sea. It turned left and headed north. As they continued on, they saw the shadow of a huge ship.

"Jin, Jin, what is that?

"It's the cruiser <> of the Horai Island Navy."

"...... how big is it!"

A cruiser is 100 meters long.

"A hundred meters? ......"

Marcia is absolutely mortified.

"All metal and 100 meters...it's ridiculous that we're making a fuss over 40 meters."

Rodrigo was also quite shocked. However, he seemed to have imagined Jin's ability to some extent, and his expression was not that surprising.

"Hmm?　There's something behind that ...... too, eh, eh, eh!

"Marcia, what ...... is it, what is it?

A kilometer behind the <>, the battleship <>, which had been converted from an aircraft carrier, floated silently in all its majesty.

"2......It's more than 200 meters, isn't it?　The ship that you said was 100 meters is like a toy!"

This time Rodrigo gasped.

The refitted is 250 meters long and has a 30,000-ton capacity.

"...... what the hell is Jin trying to fight......?"

Marcia muttered in disgust. Jin replied.

"Well, there was the Death Serpent, wasn't there?"

"Yes, there was.

"There's a monster that preys on dozens of them with ease. It's called a sea dragon. I think it is ...... to fight against such demons."

Marcia knows of the Death Sea Serpent that once attacked Potlock. The other day, the ship was destroyed by a monster called , and she herself was almost lost.

"Oh ...... sure. You have to protect yourself. ......"

"The role of the navy is to protect the transports."

"Yeah, I understand that now."

So, Marcia also agreed with Jin's explanation.

After enjoying the boat trip around Horai Island in this way, Marcia and Rodrigo decided to return to Potrock for a while to take care of the store.

"Well then, we'll be back. I can come to ......, right?"

"Yes, of course. ...... keep this on you. If you are in danger, just say <> and the wards will be put up."

As a sign of the family, Jin gives her a <>.

"When you go through the warp gate, be sure that no one sees you."

"Sure, of course. I'll be careful.

Jin-dono, see you later.

Marcia and her son then returned to Potlock.

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

Meanwhile, in the Kingdom of Klein.

King Alois III himself had a favor to ask of his daughter, the third princess Rieschen.

"...... So, you would like to present a tier as a gift for the commemoration of the Kingdom of Selroa?"

"Yes, that's right. We have nothing else suitable and no budget. Besides, we have just barely averted a food crisis. We cannot burden the people any longer.

"......"

Rieschen looked down and thought for a moment, then looked up and smiled.

"I understand, father. I will give Tia to his country.

"Oh, well, I'm sorry, Rhys. Thank you, thank you."

Rieschen was in tears of sorrow and frustration, but seeing his father's relieved face, he could neither show it on his face nor in his manner.

"That's the way it is,......, Tia. After this, you will be handed over as a gift to the Kingdom of Celuloa."

"Yes, Your Majesty. I'll leave that task to you.

Tia nodded calmly, showing no emotion.

"Well then, Your Highness. Thank you for all your help over the years. Please take care of yourself. I always wish you happiness.

"Tia ......"

Tia then left the room with Alois III.

"......Ugh......Ugh......Ugh......"

When the door closed and Rieschen was left alone, she broke down and cried aloud, without hesitation.