Fate/kaleid liner PRISMA☆ILLYA 2wei! - Vol. 4 Ch. 18 - Tricolored Birthday

[MangaDex]

 

[Glomoro]

Better kill that one girl with fire before the rot spreads to the others

 

[reginaldhanzo]

"Illya, and all of you, and Shirou..." Yeah, it's pretty clear to see where her allegiances lie XD. Sorry Kuro.

Spoiler

But for real, the extra context of 3rei really just makes this hit like a hammer.