While Marikka D. was preparing the temporary base, Jin D. was having a difficult time at the <>.

Because even the explosion of <> No.1 did not solve <>'s runaway ...... infinite loop.

"If I hit him directly, it would be recognized as a hostile reaction. ......"

The old man decided that it would be better to leave <> alone and let Jin D go on.

The door was just a few steps away, so he decided to open it for now.

Since he had memorized the method of opening the door from <, there was no problem.

"Set the dial here, press the keys in this order, and finally slide the puzzle-like keys like this: ...... Okay, it's open."

Beyond the door was a wide hall, and in the center was a silver sphere supported in the air by countless cords.

Jin D. guesses that it seems to be a .

Since still has not returned from the endless loop, Jin-D has no choice but to take a step into the hall.

He carries < on his shoulder for safety.

Since he had just used her as a repair person, he was sure that she would not be alarmed.

"Well, I guess he's the magic brain here.

Now Jin himself is piloting Jin D.

Jin D slowly and carefully approaches the magic brain.

Finally, he is able to touch its outer covering.

"...... hot."

The temperature was well over 100 degrees Celsius. <

However, since he was a doppelganger, he touched it with his hand, which he would not have done if he were alive.

"<>......<>......<>"

It seemed to be quite hot, and even with the engineering magic of cooling, it did not cool down in just one degree, but required three repetitions.

After three times of cooling, the overheated outer covering cooled down, and Jin D was able to use <> by touching the outer covering again with his hand.

"<>......Fun...... basically the same as <>, except it's spherical."

The first investigation shows that the only difference is whether it is cylindrical or spherical.

And .......

"There are many more poor areas than <>. ......"

To Jin D, it looks as if it were made by someone technically inexperienced.

In the meantime, the outer covering started to heat up again.

"I'd better fix the part that is heating up inside as soon as possible."

We know which unit is generating heat based on the we have just performed.

First, we need to cool it down by <> and then temporarily disconnect it from the system ......, but it is risky to disconnect it suddenly because the magic brain is still in operation now.

"It's also strange that ...... they don't react to anything after so many things have been done to them, isn't it?"

There is little precedent for a single unit going out of control and affecting the entire system.

If anything, it is because the system is not complete. .......

"Well ...... thanks, I can only think that the person who made it is not a ...... skilled person."

That's Jin's honest impression.

To be frank, it even seems to be made by a <>.

(......) On second thought, now might be a good time to fix it (......).

Since you have asked me to fix it, I am not going to do anything arbitrary.

If things continue as they are, we will never get anywhere, and Jin D himself is in danger.

In fact, the air in this hall was stagnant and the conditions were quite harsh for human beings.

（Okay, let's fix it.)

So Jin D decides to stop the Magi Reactor, which is supplying energy to the brain of the magician, in order to stop it urgently.

Normally, he would have entered keywords such as <> or <>, but since they are no longer accepted at all, there is nothing he can do.

"<>".

The simplest thing to do is to separate the energy conductors.

"...... Sorry."

With an inward apology, Jin D. disconnected the energy conductor of the magic brain.

Naturally, the magic brain stops completely.

As Jin D saw, there was no auxiliary or backup power supply, and the magic brain stopped immediately.

"......Okay<>......Yeah, that's about right."

We know that the unit that was generating heat was the source of the problem. So I decided to replace the control core in the unit.

Since it is a small space, I decided to leave it to Mini Reiko.

"Let's use this as a replacement control core.

The quality of the magi crystals I brought with me is improved by applying to them.

Reiko returned just in time.

"I pulled out the control core from the runaway unit," she said.

"Thank you."

Jin first copies the control core he received.

Then he analyzes it again.

"<>......<>...... Umm, yes?　......<>...... ah......"

Jin, who was piloting Jin D, involuntarily wanted to look up to the sky from the pilot's seat.

The reason was that the control core was so sloppily made.

"Written by a complete beginner. ......"

First of all, the structure is difficult to understand. First of all, the structure is difficult to understand. It looks as if it was written out of an idea.

Second, it is inefficient. There are too many unnecessary routines and meaningless branches.

And the worst of all, the weighting of the decision process ...... was not consistent.

In one routine, A is considered the most important, but in another routine, B is the most important.

This is why the process stops when it has to judge the importance of both A and B.

Lastly, as a final note, there is one > that is incorrect.

It is a trivial mistake. For example, a comma <> and a period <>.

However, it is fatal to the control core.

"......Well,......I'm beginning to think that it is right that it is a magic brain made by a beginner after all."

Jin D corrects the mistakes.

"<><......<>......<...... here too... ...<><>"

With the 12 corrections made, the grammatical errors, if not the efficiency, should be gone.

"Reiko, please go and put this back. ...... and also remove the control core from the unit next to it."

"Yes, sir."

Seeing it firsthand, Jin was concerned about this magical brain.