There are so many things that break my heart already, but the static colour they give Kurogane in the first panel definitely contributes.
Also the sheer DISBELIEF the other people have that the monsters are here.
They were so safe and has so much faith in the ruling family that their first instinct is to QUESTION rather than to run or fight.
Naturally, their first thoughts are ABOUT the ruling family too.
What about the wards, they ask. Because they can’t imagine that Kuromama could be dead.
What about the master, they also ask.
Because if the monsters are here then he’s probably already dead as well.