He wasn't fighting to win. He was fighting to prove that a heart made of glass could still cut like steel if it was tempered by a selfless wish.
It wasn't for glory. It wasn't even for justice anymore. It was because he could still see the fire. He could still feel the heat of the city burning ten years ago and the hand of a man who looked happier to save someone than to be alive himself. "Why I Fight" and "Defeat Him Protect Her" EMIYA Theme
Under a sky the color of a bruised lung, Shirou Emiya stood amidst a graveyard of blades. This wasn't the Infinite Creation of Swords he’d eventually call his own—this was the messy, blood-soaked reality of a boy trying to keep a promise to a ghost. He wasn't fighting to win
Then, the air shifted. The gold-clad King of Heroes descended, a walking god of arrogance. Behind Shirou, she stood—Saber, her breathing ragged, her armor cracked. She was a king, a legend, a myth. But in this moment, to him, she was just a girl who had carried the weight of a country until her shoulders broke. It wasn't even for justice anymore
Protect Her. Not because she is weak. But because she has spent an eternity protecting others, and it was finally time someone did the same for her.
Shirou stepped forward. He didn't look back at Saber, but he felt her presence like a sun at his back. He didn't need to be a hero of justice to save the world. He just needed to be a boy with a sword who refused to let one person suffer. "Trace... on."