“Ngh...!”
Hansa barely dodged, wiping the smile from his face for the first time. He looked for Jester as the heat rushed on, but the Dead Apostle was already gone from where he had been standing.
Where’d he go?
As Hansa wondered and looked around, he left a momentary opening.
Jester did not miss it. He stuck a hand out from inside the flame tornado, and grabbed hold of Hansa’s arm.
“!”
“Got you!”
The Dead Apostle pulled Hansa toward him with far more than human strength, and lashed out with his other hand to pierce Hansa’s neck. Jester was certain that his knifehand would put an end to the executor before he had a chance to swing a Black Key with his free hand.
The next instant, however, his expectations were betrayed by Hansa’s unanticipated counterattack.
Clang. A mechanical sounds shook Jester’s eardrums. A moment later, he realized that his hand that had been holding Hansa’s arm had let go. Or rather, it had been pried off. A blade had slipped in from somewhere and sliced off all its fingers.
“...!”
Jester took a large step back and glared at Hansa, who leisurely picked up a Black Key.
Then he saw it.
The priest’s sleeve was torn... and from beneath it sprouted a blade with the same properties as a Black Key.
“Damn you... A prosthetic arm!”
“Didn’t I mention? Seven tenths of my body are consecrated gadgets for taking on monsters like you.”
“I’m shocked. Who would have imagined that the Church had the technology?”
“The Church exists to guide people. Why wouldn’t it have the cutting edge in all technology and mystery? Not that I’d know much about it.”
Hansa spoke carelessly as he reviewed the chain of events that had just transpired. As he did so, he noticed that Jester’s fingers, which he was sure he had severed, were back on his hand. He had been putting it down to the characteristic regenerative powers of a Dead Apostle, but something told him that the way Jester healed was unlike the vampires he usually faced.

Fate/Strange Fake: Volume 2, Chapter 4 ("Day 1, Early Dawn")