To show the sincerity of Chaldea.
Roman brought Lu Chen to a room that looked like an engineering department.
A young girl wearing a red and blue dress with long black hair greeted them.
“Hello, I am Leonardo da Vinci, Chaldea's technical consultant. I’ve heard about your situation from Dr. Roman.”
“You need some magical information from this world, right?”
Da Vinci greeted the group.
Before she finished speaking, a question mark popped up from behind Lu Chen's ship girl:
“Da Vinci?! How can Da Vinci be a cute girl?!”
Looking at the beautiful young girl with black hair and green eyes in front of them, everyone couldn't connect her with the world-renowned artist in their impression.
“The Type-Moon world, amazing, right?”
“Let me tell you another secret, King Arthur is a cute girl, Nero is also a cute girl, and they look similar.”
Lu Chen didn't dwell on it and directly asked a question:
“I need a complete system of Great Magic, oh, and the summoning array for Heroic Spirits.”
“As for magical information, there are some scattered documents here. Others will need time to be sorted and collected. After you solve the singularity, I will give them to you.”
Da Vinci thought for a moment and handed Lu Chen a few old books.
“The method of summoning Heroic Spirits is relatively simple. We actually summon not their true forms, but their avatars, Servants.”
“Just draw the summoning array, chant the incantation, and follow the corresponding steps.”
“However, the key to summoning lies in the relic. You must possess an item from their lifetime, and also the Heroic Spirit must actively respond to your summons.”
Lu Chen glanced at it. The array was not difficult, and he should be able to copy it easily.
As for the relic… Chaldea didn’t have it, but he felt he could find a way from other worlds.
“Servants need the Master's magical energy to power themselves. If you don’t have any Magic Circuits, the Heroic Spirit you summon may not be able to maintain their existence…”
Fujimaru Ritsuka kindly reminded them.
“No problem, I have the Magic Cube. Hopefully the Heroic Spirit can be compatible. If it doesn’t work, we can both replenish our magical energy.”
Lu Chen was full of confidence.
“Huh? Replenishing magical energy? What?”
Gudako was completely dumbfounded.
…
After receiving a few magic books and information about summoning Heroic Spirits as a “down payment.”
Lu Chen began to help Chaldea deal with the problem.
The group went down and returned to a small room.
A blue-glowing Earth was bound by a force field and suspended in mid-air.
On the world map above, several places were emitting white dots.
“This is the ‘Simulated Earth Environment Model-Chaldea Dias,’ and it is also one of Chaldea's most important equipment.”
“Through this device, we can observe the future of Earth and use it as a map for human history.”
Roman pointed to several locations on the Earth as he spoke.
“The Human Order Calamity has produced seven singularities in total. Each singularity is a crucial location for humanity.”
“We can currently locate one of them, which is approximately located in France in 1431.”
Roman introduced the situation to the group.
“After traveling to this world, we will retrieve the Holy Grail, correct the wrong history, and this singularity will return to normal.”
“The Hundred Years War of the Evil Dragon, I know it well.”
Lu Chen smiled.
“Black Jeanne and White Jeanne? I'll try to bring them back together.”
“How do we get there?”
Kaga asked.
“Spiritron Transfer.”
Roman brought the group to a huge machine.
“This is the Spiritron Calculation Device. It can change the Master's form into Spiritron, allowing them to be projected into different eras.”
“This technology is very dangerous, even having the potential to be used as a time machine. Therefore, each use must be approved by the United Nations.”
“Of course, now that humanity is destroyed, there’s no need for anyone to approve it.”
“…”
“Amazing… I heard the Sirens are researching the creation of parallel worlds, but I have never seen anything real.”
Richelieu expressed her genuine admiration.
Time travel is top-notch technology in any world.
“Then… if you have no other questions, prepare yourselves. I will project you to the singularity…”
“I will support your operations in the singularity.”
Roman was about to count the number of people.
“Wait!!! ”
“Can I have a blueprint of this machine? I can exchange resources for it, gold, silver, or anything else.”
Lu Chen stared at the Spiritron Transfer device and asked.
“Huh? It should be impossible, but since you are from another world, it shouldn’t matter, I guess…”
“After the matter is resolved, I will find a way to get you one.”
Roman thought for a moment.
“You also want to use it to change history?”
“No, no, no, I don’t have any plans to do that right now.”
Lu Chen shook his head.
“It’s just that with this, I can do many things.”
“?”
Seeing their puzzlement, he explained a little:
“An ordinary person using Spiritron Transfer to travel to the past, if they want to return, they can only be recalled by the Spiritron device. They can’t take anything from that era.”
“But I’m different. I have the power to open time and space channels, which means that after I am sent to a certain era, I can open a channel to come back myself.”
“This way, I can not only make up for many regrets, but also solve some very difficult problems.”
“For example, the Primordial Elf that has been hanging on the task list for a long time, and that TaMa, Zouken Matou.”
..
(Picture of Da Vinci)