"Well, what should we do first?

After leaving Reinhardt and returning to Horai Island, Jin had already decided on his future plan.

It was to "intervene in a way that is unrecognizable to me.

It is the same as some hero stories where the identity of the hero remains a mystery until the last episode.

Jin thought that he had just made a helmet and a reinforced suit.

Then came the idea of a giant robot. There was no way Jin would not jump at the idea.

"We can't directly intervene in the war, but..."

He thinks it might be a good idea to intervene when ordinary people are in danger.

More than that, we think it is the best banner for the Unification Party (Unifiler).

After all, it stands out.

I think that lasers and railguns are less threatening because we don't understand what they do to us.

A giant robot ...... golem would be intimidating enough, right?

So, the first step is to develop materials.

The base material is light silver, because it would weigh too much if it were made of adamantite.

"Hmmm, I remember learning that titanium is an alloy of aluminum, vanadium, and molybdenum. ......

Jin desperately tries to recall his past knowledge.

I guess that light silver is made by replacing neutrons in titanium with magitrons. Therefore, he thought, it must have properties similar to those of titanium.

"We'll just have to give it a try.

With Reiko as his assistant, Jin began to search for an alloy of light silver. Thanks to engineering magic, it only takes a moment to make a test piece. This is a big deal.

By mid-morning they had almost found the best combination of metals.

"Brother Jin, come in."

Lunch is again with Elsa and the others. It was a cloudy day, so we had lunch indoors.

Looking at the Persica berries that had been cut rather awkwardly,

"Oh, Elsa peeled the persica today," said Jin.

Jin said. Elsa smiles at Hitoshi for noticing.

The menu consisted of freshly baked bread, citran marmalade, vegetable salad, vegetable soup, and tea.

All of them are seasoned as if Elsa had made them.

Yes, Elsa is improving day by day.

Jin praised her as she ate.

"I'm glad to hear you say so, Jin.

Erza smiled happily at the praise.

After lunch, the new alloys were tested again.

"Let's see, 90% light silver, 6% aluminum, and 4% vanadium.

In the end, they settled on an alloy called 64 alloy. Aluminum, once called light silver on earth, seems to be less abundant than titanium in this world.

Vanadium was originally 23 in atomic number, next to titanium and before chromium, so Jin also managed to identify it by analyzing it in some detail.

In this world, it was found in the soil, albeit in small quantities, and was even piled up in a corner of a warehouse as a mysterious ore.

It can be said that our predecessors had the foresight to instruct us not to dispose of such unknown ores and metals.

A quiet word.

Jin made 64 alloys of titanium and light silver, and diffused mithril silver into them.

This added the bonding force of magic to the bonding force between the atoms, and finally he was able to increase the strength of the alloy to seven times that of ordinary light silver. This was astonishing.

"Hmmm, I think this alloy should be used for light silver from now on.

Jin also felt this way.

Now, once the materials were selected, it was time to begin production. The craftsman (Smith) Golem is called back from 91 to 100, and is made his assistant.

The old man is building the aircraft carrier under his direction, but Jin does not care about it, and the old man understands too well Jin's capricious nature.

After all, most of his knowledge comes from Jin.

"Let's make three robots, one with remote control, one with autonomous action, and one that can be controlled by riding on it.

The giant robots that Jin knew were those that were controlled by a pilot, those that had some degree of willpower, and those that were controlled by riding on the head or something.

The basic structure is the same. The skeleton, muscles, and exterior are the same.

Since it was basically the same as the golems we had made so far, only larger, the prototype was completed in an hour with the support of Reiko and the craftsman (Smith) golem.

The rest was to incorporate the control system. The autonomous model is almost the same as the Golem, so it was easy to make. The commands are given through a manacam, a magical communication device.

"Okay, uh, <> No. 1, move!"

The name is apparently a reference to the light silver, <>, and the Titans of Greek mythology.

Titan 1 stands in the plaza in front of the institute. It looks quite intimidating.

"Okay, try walking."

Since this is a test, Titan-1 has no vocal mechanism yet, so it moves silently. But its steps are sure-footed. The ground rumbles powerfully.

"Okay, try running."

Following the order, Titan One slowly begins to run. And then it gradually picks up speed. It's not a bad move.

"Reiko, what do you think?"

Jin asks Reiko's opinion.

Yes, I think it's not bad. It's not as bad as the last Gigarth we fought.

"Yeah, that's true."

Titan 1 made it to the edge of the plaza and, being an autonomous vehicle, turned back around.

"Okay, now let's shadowbox!"

The Titan-1, which had been partially transcribed with Jin's knowledge, was able to communicate with the others and began to move. The Titan-1 moves with an agility that belies its size. Jin is pleased that his hypothesis was correct.

"Okay, stop."

Jin stops Titan 1 to check for any anomalies in its various parts. His face is full of joy.

"Yeah, yeah, it was only a short time, but there are no abnormalities in the joints, skeletal structure, or muscles!　I'd say this is a success!

"Congratulations, father. You've done a marvelous job."

Reiko looks happy too.

"Yes. Then let's finish the one you're going to pilot first!

Jin worked on the Titan II with great vigor.

He decided to stop riding on the head because it was too dangerous, and to install a pilot's seat inside the fuselage.

The control core, which is a copy of the Titan-1's movement data, is used to make fine adjustments such as balance, while the pilot gives movement instructions.

This is because Jin does not expect the pilot to be able to control a giant robot out of the blue.

Therefore, No. 2 was completed relatively easily. Since it was not as dangerous as flying, Jin climbed into the robot.

"Father, are you all right?"

"Yeah, it's just like driving a car."

Jin did not have a driver's license, but he had driven forklifts and other vehicles on the factory grounds, but not on public roads.

"Okay, here we go."

Jin sits in the cockpit on the chest. Since it is a prototype, it does not have chest armor and can visually see in front of it.

"Go!"

He stepped on the accelerator pedal, and the output of the ether converter and mana driver increased, and Titan II began to move accordingly.

At first it was like a thud, thud, thud, and gradually it became faster and faster, then it made a U-turn at the edge of the square and came back ...... to a sudden stop.

"...... father?"

Reiko, who had been going along with him, looked up and saw Jin's blue face. Reiko knew what it looked like.

She rushes to the cockpit and jumps up,

"<>!

and healed Jin with Shoro's imperial chant.

"Ah, ah, thank you for saving me, Reiko."

Hitoshi looked dismayed.

"I got drunk so fast. ......"

Since the size of the boat is almost ten times larger, the up and down movement when walking is also almost ten times larger. This, in turn, put a strain on the pilot, and he easily became intoxicated.

"I'm sorry, but the passenger-controlled type is dead.

Jin gets off the Titan II with the help of Reiko.

"I think I can handle it, don't you?

Reiko follows up. Jin hears this and says,

"Yeah, you're right. I'll build this one exclusively for Reiko.

He says, "I'll finish that one later. They decide to finish that one later, and start working on the third and final remote-controlled Titan III.

It uses the same system as that of Jin's substitute doll that we made the other day.

I decided to sit in a special pilot's seat from which images are projected from the magic eye installed in the golem's eye, and control it from there. Otherwise, there was nothing I could do when the Golem went far away from my sight, and I also wanted to feel the sensation of flying the Golem by myself.

Jin's enthusiasm must have been responsible for the fact that he was able to complete all three of the aircrafts after making various adjustments until nightfall.