With Noctis and Ignis taking point, Prompto's left behind to answer Estelle. He finally lifts his line of sight over the sill, gun steady in his hands, peering out into the night.

"I... think so, yeah? Man, it's too dark to see--"

But he hears Noct and Ignis react, sees Ignis call his second dagger to hand, and actually, Prompto would know that crumpled form anywhere, he has more pictures of him in his camera and in his memories than anything else, the most important thing in his life.

He recognizes the warning in Ignis's voice, and he raises his own. "Nyx, dude, get away from there, that's not Noct!"