Shirou Tokisada Amakusa.
Haru was of course familiar with this name since he was a student in Japan and Shirou was also the famous leader of the Shimabara Rebellion.
When religion started to intervene with the authority within the country, nothing would end well.
There were a lot of conflicts which was caused by religion such as Crusades, Witch-hunt, terrorism, and a lot more.
After all, when someone owned power and was followed by a lot of people, their true nature would be shown.
Haru loved the words said by Lincoln, the U.S. President.
"If you want to test a man's character, give him power."
When someone was in power, especially those religious leaders, it was good if their character was good, if their character was bad, then it would lead to a disaster in the country.
Shirou Tokisada Amakusa, the teenage leader of the Shimabara Rebellion. Born in the Edo period, he was a boy of miracles who could nearly be called a saint. However, exactly how he was discovered and, in fact, at least the good half of his life is wrapped in mystery. He who concentrated on his studies since childhood began to perform many miracles at the frontier for a time. Having healed wounds and walked on water, he eventually began to be enthusiastically worshipped as the son of God by the peasants that believed in a prohibited religion.
However, in truth, Shirou Tokisada Amakusa was someone who by chance learned Magecraft and because of that, he could show various miracles.
Shirou's story started with the rulers of the land, the Matsukura clan had drastically raised the taxes causing famine and over taxation to the people. This action forced the weak to fall in despair as they were unable to even resist. As they continued to be exploited, the people found salvation in Christianity, the words filled with love that couldn't be defeated by starvation, poverty, or despair. However, the Matsukura clan tried to take even that from them.
When someone was poor or in despair and didn't have hope, religion was their salvation, it was a normal thing, however, the Matsukura clan felt that this religion would threaten the government of their land which caused them to stop Shirou's religion which was Japanese style Catholics.
With the actions of the Matsukura clan, the people felt that Matsukura's action was no longer exploitation but it was murder. The people were provoked and they rose up and revolted. They feared having their right to live taken away overcame their fear of dying in battle.
In the past, the worth of people was cheap since there were no human rights at that time.
Well, enough of the comments since in this revolution, Shirou was the leader among them.
Shirou led 30,000 people and attacked the shogunate at that time who sent 120,000 to suppress them. He knew that in this battle, he shouldn't lose, nor should he win, a tie was the best result for them, however, unfortunately, he won.
Shirou and his people killed more than 4,000 people from the Shogunate with casualties of less than 100 people.
However, because of this, the Edo Shogunate at that time was in panic and decided to end the life of Shirou and his followers.
As a result, the Shogunate successfully defeated Shirou and his followers by starvation tactics, threats, and various methods, then finally, broke into the castle that was guarded by Shirou Amakusa, and slaughtered all 30,000 Shirou's followers without hesitation, leaving nothing.
Shirou Amakusa was also killed, however, his teaching had survived, but his teaching wasn't as popular as Shinto nor Buddha in Japan.
Haru then used his ability as a master to see Shirou's status.
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Class: Ruler.
Master:
True Name: Shirou Amakusa Tokisada.
Alignment: Lawful Good.
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Parameters:
Strength: C
Endurance: C
Agility: B
Mana: A
Luck: B
Noble Phantasm: D
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Personal skills:
Revelation (A-Rank): A personal skill equivalent to "Instinct". Instinct is a sixth sense regarding battles, but "Revelation" accommodates all matters related to the achievement of a goal (for instance, choosing the most suitable path while traveling). Because there is no basis (so he thinks), it cannot be explained well to others. His Revelation comes from a vision from his arm, if he studied under Thomas Edison, he would be undergoing Conceptual Improvement until it became a rocket and the birth of Shin Amakusa Shirou.
Charisma (C- Rank): The natural talent to command an army. Although he cannot run a nation, he can share those with his like-minded and strong ties comrades to death. Thanks to his charisma, it is possible to make others believe in the contents of the "Revelations" skills without basis.
Baptism Rite (B+ Rank): A type of Magecraft that changed style into a church form. It is effective on a spiritual body. By linking his two Noble Phantasms, it is even possible to make a Servant go through a sublimation process. His Baptism Rite was so extraordinarily powerful that it wasn't possible for a human.
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In the third Holy Grail War in Fuyuki City, the Einzbern family used the mechanism of the Holy Grail War to illegally summon a Ruler class servant to win and the Ruler class servant that was summoned was Shirou Amakusa Tokisada.
Shirou wasn't a heroic spirit that was all-powerful, and he could only rely on his strategy, fighting skill, and various spells that he possessed during his life at that time to survive the Holy Grail War.
If Fuyuki City's Third Holy Grail War ended, then Shirou might be able to win that day, however, unfortunately, Darnic discovered the Holy Grail, and stole it without hesitation, bringing it back to Trifas, defeating Shirou without even fighting against him.
However, even if Shirou lost the fight, he didn't die.
At that time, Shirou had touched the Holy Grail, and under the influence of the Holy Grail's Magic power, he obtained a flesh directly to live in this world without problem.
After that, Shirou was adopted and he changed his name to Kotomine Shirou.
The reason why Shirou could see through Raikou's true name was that he owned "True Name Discernment" which made him able to see through the real name of any servants.
"I'll call you Shirou, is that alright?'
Haru was wondering whether Raikou could also obtain flesh after she touched the Holy Grail.
"You haven't given up Holy Grail, right?"
Otherwise, Shirou wouldn't come here as the overseer from the church and also participated in this Holy Grail War, and even control the other masters from the same faction, and became the master of all the servants in the Red Faction.
"I have heard that all the heroes that are chosen as Rulers are heroes that don't have a desire for the Holy Grail." Haru looked at Shirou and said, "You're not, right? It seems that you have one or two wishes."
Haru's words made Shirou smile.
"After all, I am a servant that is summoned by the Einzbern family illegally, not Ruler who was summoned officially by the Holy Grail." Shirou smiled and said, "It was also the reason why the Ruler was unable to appear normally in this world and needed to lend the body of someone to appear in this world."
There was already a Ruler in the Holy Grail, so for this reason, there was an error in the Holy Grail War, resulting in how Jeanne d'Arc needed the body of Shinobu to appear in this world.
"If possible, I really hope the Ruler does not appear."
Shirou spoke with a signer and said, "For me, whose existence is considered a violation, Ruler who intends to maintain order is undoubtedly an enemy."
Therefore, Shirou asked Karna to kill Jeanne.
Haru raised his lips lightly and asked, "So are you not afraid to appear in front of me now?" He smiled and asked, "Aren't you afraid that we will kill you?"
"........"