Assassin briefly hesitated about her course of action, then apparently decided that she did not have the time to fight a double and made to leave out a broken window—toward where Kuruoka Tsubaki was.
But a massive form covered the broken window, standing in her way.
It was neither a smoke-like demonic beast nor a Kerberos; it was an even more pure symbol of death: a complete skeleton scorched and carbonized by jet-black flames.
One other notable feature was its height, which rivaled the building’s.
“Whoa! A giant’s ghost?!”
Flat was startled like an elementary schooler. Jester, meanwhile, slowly rose from his knees.
“Whoa! A vampire’s ghost?!”
Flat was even more startled.
“The spell should still be effective,” Jack chimed in, still in wristwatch form.
Jester might be a double, but that did not necessarily mean that he could not attack them.
The people around the room tensed while Jester remained downcast and silent. Then . . .
“. . . Hee hee.”
A soft chuckle escaped him.
“I see. . . . So, I’ve been scrapped as a Dead Apostle.”
Jester’s face was still ghostly pale as he broke into a grin with more than a hint of madness in it.
“Then we’re a perfect match now, my dear Assassin.”
“What do you mean?”
Assassin furrowed her brows, sensing something ominous.
“You were abandoned by your chiefs despite holding the strongest faith of anyone, and I was abandoned by the mainstream of the pro-humanity faction because I turned toward a stronger love than anyone. Yes, I see! So, this is the view you saw! Now I understand it in my soul! We truly were destined to be drawn to each other!”
“Stop. You sound like a stalker who lost his job after the he got the cops called on him.”
Hansa looked disgusted, but he did not have time to listen.
He turned his attention to the giant skeleton and considered whether he ought to destroy it or make his escape.
Then, a loud shock shook the building.
“?!”
It was obvious what had happened.
The giant skeleton had raised its arms and begun to punch the building.
“Oh! This is beyond my wildest expectations! That’s a world built on dreams and death for you; it’s as if there’s no end to its nightmares!”
Jester became even more excited as he continued to smile through the pain wracking his body.

Fate/Strange Fake: Volume 6, Chapter 20 ("Dream Becomes Reality")