“I won’t let you . . . Ngh . . .”
Assassin rushed at Jester, but the countless smoky, black grotesqueries blocked her path.
“Oh, it looks like these things—this whole world, really—are going after Servants first. Be careful, now. And the same goes for the renowned murderer over there,” Jester added, looking at Flat’s wristwatch. There was a hint of something like respect and affection in his voice, but Jack himself was the only one to notice it.

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