Chapter 4

In the Chaldea facility, which gathers mysteries and technologies from around the world, the entire structure exudes a sense of futuristic machinery. Even walking down the corridors gives one the feeling of being in a high-tech base.

Within such a facility, access and permission mechanisms are set up everywhere.

Depending on one's status and permissions, the areas each person is allowed to access vary.

Rozan and Mash do not hold high positions in Chaldea; they are considered "magicians hired by Chaldea," akin to being low-level employees in a large corporation.

Therefore, the areas Rozan and Mash are allowed to access in Chaldea are not many.

Even so, after passing through several automatic doors that recognize their identities and an elevator, Rozan and Mash successfully arrived at the Central Control Room.

This is the nerve center, command room, and heart of Chaldea, one of the most important facilities for the organization.

The "simulated battle" that Mash mentioned needs to start from here to be officially declared.

In other words, this area is accessible to Rozan and Mash. As long as they approach the door within half a meter, it will automatically recognize their identities and open.

"Fu!"

Just as Rozan and Mash were about to enter the Central Control Room, Fufu, who was standing on Mash's shoulder, suddenly leaped down. With a few cute "pata pata" steps, she ran off in another direction and quickly disappeared at the end of the corridor.

Seeing Fufu act this way, Rozan and Mash stopped again, but they were not surprised.

"Running off again?"

Rozan muttered to himself.

To this, Mash also spoke, saying, "Fufu is still the same as before, never appearing in front of others."

As Mash said, Fufu has never appeared before outsiders.

In Chaldea, almost everyone knows that there is an incredible creature here, but the number of people who have been fortunate enough to see Fufu can be counted on one hand. Even the current director only knows of her existence and has never seen her.

Therefore, Fufu generally avoids the eyes of outsiders and roams freely and whimsically through the various corners of Chaldea.

This mysterious creature, however, for some reason, is particularly fond of Rozan and Mash, often appearing before them every day.

Sometimes, she would appear when Rozan was playing games, lying in a corner of the room to sleep.

Sometimes, when Mash came to find Rozan, she would leap onto her face and then onto her shoulder, accompanying her.

At first, Rozan was very interested in Fufu and tried several times to form a "contract" with her, but all attempts failed.

Over time, knowing that Fufu did not want to form a "contract" with him, Rozan gave up on the idea. He treated her like a pet, playing with her when he was in the mood and ignoring her when he wasn't. Together with Mash, they were regarded by the Chaldea staff as Fufu's caretakers.

"Let's go in, senpai."

"Got it."

At Mash's call, Rozan responded absentmindedly and then stepped forward, entering the Central Control Room as the automatic door opened.

The next second, a space with a futuristic feel, entirely bathed in a deep blue, appeared before Rozan's eyes.

Rozan was almost immediately drawn to something in the center of the Central Control Room.

It was a huge globe floating in mid-air, its azure surface shimmering with light.

"Earth Environment Model —— 'Chaldea's Earth'..."

This is a miniature Earth model created by replicating the soul of the planet, which is defined as a living entity with a soul.

This model can be used in conjunction with the near-future observation lens —— 'Sheba' to observe the planet's history.

Chaldea's mission to protect human history is based on this.

Through the cooperation of 'Chaldea's Earth' and 'Sheba,' people can continuously monitor the future of the Earth and confirm the state of the planet a hundred years from now.

The light shimmering on 'Chaldea's Earth' represents the flame of civilization.

As long as it continues to shimmer, it means that humans still exist on Earth, and human history will continue to unfold a hundred years from now. Human civilization itself remains on track, with no issues.

Conversely, if the light on 'Chaldea's Earth' ever disappears, it means that human civilization has been extinguished, and human history has been erased. Humanity will face the "end of the world" within a hundred years.

This is the purpose of Chaldea's existence.

To monitor the future of the planet, ensure the continuation of human history, and if any anomalies occur, immediately identify the cause and eliminate it to restore human civilization and ensure its survival.

This is the significance of Chaldea's existence.

Of course, the events that could lead to the extinction of human civilization and the erasure of human history may not occur in the present era.

To ensure the existence of human history, a device was created.

The Spiritron Calculation Device —— 'Trismegistus.'

This device can transform humans into spiritrons and send them to the eras observable by 'Sheba' to carry out missions to protect human history.

This technology is called —— 'Spiritron Transfer.'

Through this technology, the "suitable individuals" within the facility will be sent to various eras when anomalies in human history occur, eliminating the causes of these anomalies and ensuring the survival of human history.

Rozan is one of these suitable individuals in Chaldea, possessing the adaptability for spiritron transfer.

And those who possess this adaptability also have a certain "qualification."

This "qualification" is...

"Senpai..."

At that moment, Mash, standing beside Rozan, tugged at his sleeve and spoke with a somewhat anxious voice, snapping Rozan out of his gaze at 'Chaldea's Earth.'

Then, Rozan understood why Mash was so anxiously reminding him.

"Too slow!"

As a voice carrying anger reached his ears, Rozan's face clearly showed his emotions.

It was a look of annoyance.

Like encountering someone he wished to avoid, Rozan slowly turned his head and looked at the source of the voice.

Next, a person who seemed to be venting their anger on the floor by stomping heavily came into Rozan's view, walking towards him.