The man is of course Shinji who transformed into an assassin, and the woman is Jeanne who appeared in the world as a ruler.
Shinji is a modern man who graduated from university and took the postgraduate entrance examination twice. He failed the first time and passed the second time but gave up postgraduate study because he got a promotion at work. Even if his learning ability is not first-rate, it is still above second-rate. Although he has traveled through time for so many years and basically returned everything he has learned to his teacher, he is still more than enough to teach Jeanne.
Joan of Arc was born in 1412, when the aristocracy was still a long way from extinction. The people were not yet enlightened, and most of those who were eligible for education were aristocrats. Born a shepherdess, she was from a poor family and was said to not even be able to write her own name. Most of the administrative work during the war was handled by her ally, the flower protector Gilles de Rais, and she was only responsible for formulating tactics and charging in the front.
That is why, when she raised the fleur-de-lis flag and led the militia to victory after victory, people believed that she had truly received divine revelation, because this in itself was a miracle!
Because of this, Jeanne was teased as a fool, an illiterate, and a poor student. By the way, Shinji never supported this view. He preferred to believe that it came from another world, that Jeanne was born into a family of strategists, and that everything was a strategy to boost people's morale.
Unfortunately, this was just Shinji's wishful thinking. After spending some time and conducting a simple test on Jeanne, Shinji was basically certain that, even if she was not illiterate, she was not far from it, and that was even taking into account the knowledge granted by the Holy Grail, otherwise she would be completely illiterate.
The terms "idiot" and "bad student" are also true. To be fair, Jeanne is definitely not stupid, but she is seriously biased in her studies. Her intellectual talents are all focused on combat, and her other aspects are simply terrible.
Shinji taught her for three hours, but she still didn't learn how to do vertical calculations—it's not that she couldn't do it at all, but she just couldn't calculate when there were too many digits.
"You are the worst student I have ever taught!"
Shinji, who was almost mad, asserted this, but he did not say it out loud. Because Jeanne's eyes - those blue eyes were full of distress and confusion, but the desire for knowledge hidden deep in her pupils remained the same. This determination touched Shinji, and he swallowed his words again and again, and explained with a pleasant face.
"Five is not enough? Then reduce it to four first, take your time, no need to rush."
Jeanne hummed and continued writing and drawing in Leticia's notebook.
Just when she finished the tenth exercise, she suddenly stood up and put the paper and pen back into her bag.
Shinji asked, "Are you tired? Let's take a fifteen-minute break first."
"No, there is a red servant in that direction, and it seems to be waiting for us."
Hearing Jeanne's words, Shinji also stood up, and his casual clothes instantly took off, replaced by spirit clothes that were designed to match his Servant's body.
"I was right."
Then, there was a roar like thunder.
"parking!"
Although the noise from the old truck was loud, it could not completely cover up Shinji's roar.
One of the relics is the lion's roar. It means that the Buddha (or Bodhisattva) can subdue all living beings (including non-Buddhists) by preaching like a lion subduing all beasts. From the perspective of magic, it is to use sound to initiate psychological suggestion, which is a kind of suggestion magic.
With just a shout, the old man forced the truck to stop.
"Please wait until daybreak before driving. We can just walk from here. It's no problem."
Jeanne used the affinity given by her job to forcefully explain herself, and after the old man nodded, she said a few words of farewell and ran at full speed with her bag.
Shinji released his entity and followed Jeanne silently.
After walking a few steps, he felt something strange. Someone had set up a barrier here, and within the sensing area, not to mention vehicles, even the smell of animals had disappeared.
Silence enveloped this isolated space, and there was an indescribable dullness in the air, as if it was a sign of the coming war.
The storm is coming.
The alarm in Joan of Arc's heart grew louder and louder.
Dangerous, very dangerous! That Servant is very dangerous!
At this moment, she finally believed Shinji's judgment—the red side really intended to harm her.
Looking back at the assassin who had entered the "breath blocking" state, the girl put down her bag and took a fighting stance.
The dark blue spiritual clothes covered the whole body, the magic armor wrapped around the arms, elbows, calves, knees and waist, and there was a metal decoration on the face that spread from the forehead to the cheek, and I didn't know how it was put on. In general, except for the incomprehensible but surprisingly harmonious forehead cover, the rest of the outfit was quite standard.
Jeanne, wearing this set of spiritual clothes, lost some of the purity she had in casual clothes, and gained some of the bravery of a Valkyrie, which was very similar to Altria. With such a temperament, it was not strange for the crazy Lancelot to admit his mistake.
The summoned ruler gradually became eager to fight.
"It seems that you are the servant ruler!" a voice came from above.
When the ruler looked up, what caught his eye was a huge sign of the highway and a young man sitting on it waiting.
His hair grew randomly, maintaining a transparent white color. His eyes were as sharp as a polished blade, reflecting the red stone embedded in his exposed chest, brewing a lustrous and enchanting color. But the most eye-catching thing was the golden armor that seemed to be integrated with his body rather than wrapped around his body, emitting a sacred glow.
Beautiful as each part is, the youth combined together gives an impression of strength beyond beauty.
Ruler stared at his figure without any hesitation and said:
"Red Lancer."
"Heh, you can see through me before I even show my weapon."
The young man, Red Lancer, nodded with some interest.
"Yes, I know. Of course, I also know your real name." Knowing Shinji's existence, she did not directly reveal the real name of the Red Lancer.
"... "
These words seemed to have enough power to make the Red Lancer stand up.
"I see, you are indeed the ruler. The fact that my real name was revealed before I even drew my gun is the best proof."
"Hmm. By the way, Red Lancer, why are you here?"
"It's not wise to keep saying something you already know. Just take my presence as a clear declaration of war."
Although he had already been convinced, Ruler still felt discouraged when he was told it again.
"Your Master is the fool. Is there any point in killing me here now?"
"Whether it makes sense or not is none of my business."
The concise answer strongly rejected the communication of thoughts, and the Red Lancer continued:
"The Master ordered me to kill you here. I am only following the Master's orders."
Instantly, a pale light seemed to penetrate Lancer's right hand, and the object that should have been in his hand appeared in the world.
In his hand, a huge gun appeared. The length of the thing was much longer than the burly young man, so big that it was hard to imagine that it was a weapon used by humans. Its delicate shape was a work of art. This was a weapon "given by God", and there was no other words to describe it.
"Lancer!!"
"I'm going to attack, ruler. Excuse me, but I'm not so calm as to consider your privilege. Let me decide the outcome with just one last blow!"
These words and the magic power that suddenly expanded left Ruler dumbfounded.
PS: In the first chapter of "Fate grand order", the Berserker Lancelot called Jeanne d'Arc Arthur, which was revenge for the Marshal in "Fate zero" who mistook Altria for Jeanne d'Arc.