The next day, the 24th, Jin and Reinhardt had breakfast and immediately went into the workshop.

Saki stayed at Reinhardt's house, and this time Bertsche accompanied them.

"Well then, let's start with the skeleton.

Last night, after dinner, Jin and Reinhardt had discussed and almost decided on the specifications of the automata.

* * * *

"How about a neutral form?

Do you mean neither male nor female?

Yes, that's right. I don't know how much sense it makes to assign a definite gender to an automaton in the first place.

Jin did not notice that Reiko, who was standing behind him, looked a little sad when he said that.

"However, you are basically masculine, aren't you?"

"That's right. But let's make it slimmer overall and make the hair a little longer.

"Hmmm..."

"For example, he could be a butler, and if necessary, he could be dressed as a woman and work as a lady's maid.

"I see!　That's interesting!　So it can be used for multiple purposes!

* * * *

"The skeleton should be made of light silver.

As soon as I said that, Saki spoke up in surprise.

"What!　Reinhard, a kilo of light silver costs two million dollars!

As expected of an alchemist, he seemed to know the market price of high quality materials. ....... He has no economic sense.

"Oh, don't worry. Jin donated the money.

What do you mean by "donated"?

"I'll teach you soon enough. If you're going to be with Jin, you can't be stuck in conventional thinking."

Reinhardt told her with a smile, but Saki looked down silently for a full minute, trying to digest what he had said. And then.

"...... Okay, Reinhard. I've lost. It is an alchemist's creed that you can't make new discoveries if you're stuck in the conventional wisdom of the world. I'm ashamed of myself.

He looked strangely refreshed and convinced.

Bertsche did not look so surprised, perhaps because of his lack of economic sense, or perhaps because of his lack of knowledge about materials.

He resumes the work he had stopped.

He is 160 centimeters tall. About the same height as Jin, just a little taller than Saki.

He is slender. He is aiming for a weight of 50 kilograms.

"First, the skeleton. I've been thinking about it a lot after watching Jin make his golem.

With these words, he prepared a lump of light silver. Actually, Jin had them brought from Horai Island in the middle of the night.

Reinhardt then shaped it into a shape. Jin had worked with Reinhardt on several occasions, but this was the first time he had seen him use engineering magic as seriously as he had this time.

Reinhardt's ability was also quite strong, and it was no exaggeration to say that he had learned from watching Jin's method.

The basic framework was completed in about 15 minutes.

"What do you think, Jin?　I want to hear your opinion.

Jin gave his honest opinion in response to Reinhardt's question.

"It's amazing, Reinhardt. I can't believe you could make something like this just by looking at it for a minute!　If I had to say anything, I'd say the fingers and wrists. I'd say the ball joints, but they look a bit heavy.

After giving his opinion to Reinhardt, Jin took a small lump of adamantite and fine-tuned it, coating the joints.

"I see!　You are reducing the wear and tear on the joints and lightening the movement. I'm learning a lot."

Saki, who could no longer stand by and watch, interrupted.

"I'm sorry to interrupt you both, but I have to tell you something. ...... is it based on a human skeleton?"

Jin answered the question.

Yes, it is. Automata are made to imitate human beings. Then, why don't you try to make them look like humans from the skeleton?

Saki groans and carefully examines the skeleton lying on the workbench.

"The ribs and pelvis are simplified, aren't they? ...... Sorry to interrupt. Please continue.

Now to Jin's main subject. The magical muscles made of magical fibers are placed.

As he was attaching the muscles in order, Jin wondered how his predecessors had acquired the knowledge of anatomy.

Reinhard and Saki, on the other hand, were staring intently at Jin's skill. Bertsche was the only one who looked unsure.

"Done."

In about five minutes, the muscles were attached. For Jin, this was a rather slow process.

"Well, Jin, that was very helpful!　Thank you!"

Reinhard clapped Jin on the shoulder excitedly,

"Jin, I learned a lot from you."

Saki thanked him quietly.

After that, they wired the magic nerves with mithril silver and prepared the control core.

Reinhardt said that it was no longer necessary, but Jin knew about the demons, so he made a shield structure just in case.

"Now, it's time to place the tactile sensors!

Reinhardt said happily. Jin agrees.

"Finally, we're going to install the world's first function!

Saki's face is full of anticipation. Bertsche is the only one with a look of >Bertsche is the only one who has a look of

We have made 40 tactile sensors in advance, two on the palms and two on the soles of the feet, one on each side, for a total of eight. We will place multiple tactile sensors: five on the chest and abdomen, three on the back, and two on the buttocks, for a total of ten locations.

The multiple locations are intended not only to prevent a significant loss of function if one of the sensors breaks down, but also to allow the center of stimulation to be determined based on the strength of the signal from each sensor.

There are four sensors on each side of the arms and legs, for a total of 16 locations. Five more have been placed on the head, and the process is complete.

"Well, there is one more, but let's keep it as a spare," Jin said.

Jin said, and Saki made a suggestion.

"If it is meant to be a prototype, why don't we place them all? How about in the mouth?"

"Hmmm... I see, when you bite something. That might be a good idea.

So, all 40 tactile sensors have been placed.

They send information to the dedicated sub control core (sub control core), which organizes the information and sends it to the main control core (main control core).

This should reduce the burden on the main control nucleus 《Main Control Core》 and enable more delicate control of the body.

"Reiko, trace the flow of magic power using Trace and Inspect. I and Reinhardt will try to stimulate our respective tactile sensors."

"Yes, I understand."

Precision work such as measurement is Reiko's specialty.

Jin and Reinhardt stimulated each of the tactile sensors, sometimes simultaneously, sometimes individually, and followed how the magical signals emitted from the sensors were sent to the sub-control core for processing.

We worked for two hours on such a simple task. Having obtained satisfactory results for the moment, I decided to move on.

It's almost lunch time, ladies and gentlemen. Take a break and have your lunch.

Berthe, who had been looking absent-minded up until then, looks at the sundial in the garden and says to me.

"Oh, it's already that time," she said.

"Time flies when you're absorbed in something, doesn't it?

"I totally agree with you," he said.

The three like-minded people stopped their work, saying what they thought of each other.

"Berthe, I'm sorry. I know this is boring for you, and I feel bad."

After washing his hands, Reinhardt gently hugged Berthe's shoulder.

"...... Oh my God, Reinhardt-sama! I can't say anything when you speak to me like that!

Bertsch, who looked a bit sulky, laid her head on Reinhardt's shoulder as she said this.

Jin and Saki laughed at the two who remained motionless.

"......Thanks for the food, I guess."

"Yeah, it's beautiful when we get along well with each other.

Saki and Jin looked at each other with the same narrowed eyes and expressed their own thoughts. It is good that they get along well with each other.

Reinhardt noticed and let go of his hand holding Bertsche's shoulder. This action brought Bertsche to her senses, and her face turned red when she saw Jin and Saki looking at her with smiles on their faces.

"Hello, Mr. Reinhardt, let's go and have a meal.

"Ah, yes, yes, Belle. Let's go to ...... Jin, Saki. Let's go have lunch."

With a shy smile on his face, Reinhardt called out to Jin and Saki and headed for the main house.