She is a heroic spirit born for Illya, and the meaning of her existence is to fulfill her wish.
However, the opportunity to derive this world line was a chance encounter in a parallel world.
"Question: Why can Emiya Kiritsugu sacrifice himself to save others?"
"P. S.: Even if the person he saved did not survive in the end, he never regretted it."
"Conclusion"
"I want... To be like him."
"Become someone who can help others as much as possible."
In the past, she was a useless otaku who was a scumbag, and in the past, she was a devil who only knew how to protect herself.
Although my youth died hundreds of years ago, this time, let me be willful.
To fulfill Ilia's wish.
The wish of that man's daughter.
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"What is Ilia's wish?"
"I hope... To return to my parents."
.
"But even if you change the past, you can't be happy. It's just you in another world who has parents again, or maybe it's not you at all.
"I don't care."
.
"So, what can you give for this?"
————Anything
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[Tumi Flower Language] The most brilliant ending