Yustisa wants to understand human hearts.
Yustisa wants to understand people's emotions.
So she chose to lurk beside Irisviel, the only artificial human who could understand people's hearts, and secretly observe everything about her, hoping to understand what she was lacking in this way.
Yustisa just looked at Irisviel silently.
In the castle, in the old house.
In fighting, in living.
Seeing her wholehearted love for Kiritsugu.
Looking at the tacit cooperation between her and Saber, and the trust they placed in each other's backs.
Watching the friendship between her and Maiya surrounding the same man.
This incredible woman changed everyone around her.
She warmed Kiritsugu Emiya's cold heart; she added a touch of color to Saber's life, making her world no longer just about war; she moved Maiya with her purity and sincerity, making Maiya truly regard her as a comrade-in-arms, rather than just an object to be protected as ordered by Kiritsugu.
She also invisibly changed Yustisa who was watching her secretly.
With her every move, she told Yustisa bit by bit that androids can be just like humans. They can cry and laugh, feel sad, be happy, and give everything for someone.
It was not a creed or mission engraved into the soul before birth, nor was it an appearance disguised by imitating humans, nor was it a "malfunction" as Yustisa had previously believed, but something deeper that had nothing to do with function, self-discipline, or rationality.
Emotion, impulse, obsession, desire...
These words were created by humans to describe humans themselves. Yustisa knew them but did not understand them, and she already had them but was willing to admit them. Irisviel presented them to Yustisa exactly as they were, without any concealment.
It turns out that this is what human beings are.
It turns out that all I lacked was the ability to accept the reality that I had become a human being.
By admitting this, I have become a human being and can live as a human being just like Irisviel.
Yustisa suddenly felt like laughing. The answer was so simple, and Shinji and Scathach had already given her the answer, but it took her so long to figure it out.
After thinking it through, Yustisa decided to repay Irisviel.
When making this decision, she did not discuss it with anyone, nor was she influenced by any external factors. She simply wanted to do it. It was a decision she made entirely on her own.
"Shinji, I want to repay Irisviel."
This was the first sentence after the call was connected. Shinji was slightly stunned, but quickly realized that this was the first time that Yustisa had taken the initiative to make a request, and it was a request that had nothing to do with the plan.
"You, found the answer?"
Feeling the undisguised surprise and joy in Shinji's words, Yustisa let out a faint smile.
"Yes, I already had the answer, but I didn't want to admit it, so it took me so long... Sorry."
"No need to apologize, just find the answer. I really have to thank Miss Irisviel."
At this moment, Shinji and Yustisa were both full of gratitude towards Irisviel.
"How do you plan to repay me?"
"I... want her to live, to live as a human being."
"Live?" Shinji was a little confused, "But isn't she the Lesser Holy Grail? Sooner or later... Are you planning to end the Holy Grail War?"
"No, the Holy Grail is only Irisviel's body, not her soul. I want to save 'Irisviel', not the Holy Grail."
Yustisa's words might be difficult for others to understand, but Shinji could, because the one speaking to him was the most vivid example.
"You want to transform Irisviel into a being similar to yourself?"
"Yes, but I can't do it now because it requires a huge amount of magic power. I was able to complete the transformation of my existence by borrowing the magic power stored in the Holy Grail, and after I made a contract with you, I lost this magic power."
Whether it is a Servant created by a Heroic Spirit or Yustisa, they are all made into containers by the Holy Grail system, and the Master is only responsible for providing the magic power required for the operation and maintenance of the container. It's like a car, the Holy Grail is the one who makes the car, the Master is the one who refuels and maintains the car, and the Heroic Spirit is simply responsible for driving the car, and the technical content and consumption are not at the same level.
"Where do you plan to get this huge magic power?" Shinji asked directly.
"It's still the Holy Grail system."
"But isn't the Holy Grail contaminated? The colorless magic has been stained with the color of revenge."
"The Holy Grail is tainted. The source of its magic is gone."
"Spiritual vein?" Shinji understood a little.
"That's right. Let's assume that the entire Holy Grail system is the Miyuan River. The Holy Grail occupied by the Avenger is only the middle section. The magic power extracted from the earth veins flows to the Avenger and is polluted. It becomes polluted magic power and flows to the outside world, but the water at the source is actually clean."
"I see. You have to do what the water company does, drawing water directly from upstream sources and delivering it through pipes to those who need it."
"That's right. When the Holy Grail War began, the spirit veins of the entire Fuyuki City were activated, especially the nodes of several spirit veins. At this time, it doesn't take much magical engineering to extract enough magic power from them. Shinji, where are the best spirit vein nodes in Fuyuki City?"
"Ryudo Temple! It is also the most suitable place for the Holy Grail to descend! My master and I are here now."
This time it was Yustisa's turn to be surprised.
"Why are you there?"
"In preparation for the coming of the Holy Grail, something happened that was beyond my expectations. I plan to make the best of it and make a big fuss."
Shinji chuckled, revealing an inexplicable ferocity.
"In fact, if you don't contact me, I will contact you in a while - in order to bring the 'Little Holy Grail' under control. Yustisa, let me confirm again, do you still want the Holy Grail?"
"Of course I do." Yustisa answered without any hesitation, "It's just... I don't want Irisviel to get hurt."
"I understand. I will try my best to save the lives of Emiya Kiritsugu and Hisau Maiya, but I cannot guarantee 100% that nothing will happen during the battle." This is Shinji's bottom line.
"Well, your safety comes first, and the Holy Grail comes second." This is also Yustisa's bottom line.
"Thank you, Yustisa, for putting me first."
"You're welcome. You're family."
Just when the atmosphere was just right, a cough suddenly occurred.
"... ... "
"... ... "
"Master..."
"I'm just reminding you not to forget your business." Scathach said in an innocent tone.
Then Justisia appeared in front of Irisviel.