He was never exposed as a magic user for using his more destructive Noble Phantasms on the battlefield. Simply put, his method of delivery was too fast to be accurately caught by even the most advanced surveillance equipment. Investigation generally attributed the disproportionate speed and destructive capacity to 'experimental man-portable coilguns', or other futuristic weapons.
A single arrow to the command post would shatter the army's chain of command, turning this battle into a rout and cementing the insurgent's victory. He seriously consider the option before jumping off the roof.
In the end, he just knows too little about the situation to take out a big shot. There would be repercussions to such an act and it's unlikely he'd be the only one to feel them. In his haste, he might end up make things worst on the greater scale.
Besides, he's not naïve enough to think there is no possible justfication for whatever is happening here.
He'll still put a stop to it.
The ground shatters beneath his feet and he winces as the shock reverbetrates through his bones. Mortal again, he reminds himself. He'll have to rethink his methods.
Greenie is ready to bolt but she stands her ground, like she's stumbed across a tiger in the jungle and she fears it'll pounce the moment she turns her back to it.
She's a inhuman existence but she doesn't carry herself with the arrogance of creatures who think themselves as above humans. If she represents a danger, it's one several levels below the battle around taking place here.
"So, immortal?" He asks conversationally.
She nods uneasily.
"This battle will be over soon. Hide or keep up with me, the decision is yours." That said, he runs toward the sound of gunfire as as fast as his legs can carry him.
Becoming a fugitive in his home country would be a poor way to begin a second life, so he projects a large scarf in the shade of his coat and wraps it over his face.
Kanshou and Bakuya materialize in his hands and he comes down on a squad of soldiers like a vengeful wraith. Just as his swing is about to connect with a soldier still completely unaware of his presence, it seizes him.
It is foolish, the wish of a hopelessly naive child. He should know better. He does know better, but the silhouette of the boy flashes in his mind, along with his most sacred oath.
The blades flash through, but only backs and pommels connect. The soldier crumble all the same, but they still breath.
"What? Who are you?"
"No time." He says quickly. "Come with me if you want to live."
It's not just a matter of protecting them. He can't let them think about how he only kocked out the men who murdered their friends, loved ones, and were about to kill them too. They won't be as merciful as you.
But there's more soldiers to stop and he can't afford yourself to slow down. He can only hope they put more importance on survival than vengeace.
He moves through the battlefield like an unstoppable force, leaving a trail of broken bodies for the people to follow. In a matter of minutes, He has disabled every footmen on the battlefield but it takes much longer for those he's left behind to catch up. They watch him with a mix of fear and awe, those people who owe him their life.
He's somewhat surprised to see Greenie leading them.
"Battle is over, like you said."
"The insurgants won?"
"Draw, actually. The Japanese resistance put up quite a fight, but a super Knightmare Frame cleaned their clock all by itself before turning back."
He shrugs. So long as the battle's over, he's satisfied.
The woman walk up to him and stare in his eyes. " I've been around for quite a while, but I've never met anyone like you." She carelessly pass her hand over Bakuya's edge, showing no pain when it comes out bloody. "Those big swords of yours are sharp enough, so I wonder why not one Brittanian was cut down. You must be one hell of an idiot."
"The biggest," he admits with a foolish smirk.
She sighs. "I am C.C. You are?"
Thoughts explode in his mind, places and people he's never seen before. There is something more to this question, something very important.
[]"I am Emiya Shirou, a humble butler."
[]"Shirou Archer, a simple highschool teacher."
[]"Simon von Einzbern, Knight of the Holy Empire of Britannia."
[]"I'm nobody, really. Just call me Archer."