“I want to see all sorts of looks on Miss Assassin’s face as soon as possible. . . . See?”
By the time he said that, Assassin was already in motion.
One look at his expression and the magical energy that surrounded him told her that he was the hematophage who had summoned her—Jester Karture.
Her black cloak glided around the ground. A knife-hand shot out of its folds, aimed at the boy’s neck.
But while her blade-like fingertips did indeed pierce Jester’s body, she could feel no resistance.
“?!”
The boy’s body dissolved into mist and reformed a short distance away.
When it reformed, however, it was no longer the boy, but the young man hematophage who had appeared at the police station and in front of the hospital.
“Hahaha! Did you really think I’d come to meet my enemies in person like a simpleton? You’re adorable, Assassin. Of course, I did want to come myself ! You’re correct! You might even say our hearts are in sync. I’m sorry to let you down, my dear Assassin! But can’t you un- derstand that heartache it cost me to send a false body to see you?”

Fate/Strange Fake: Volume 6, Interlude ("As Dream and Reality are Both Illusion II")