He knows. His expression is as it usually is, cool, calm, brows ever so slightly pinched together. The truth of what he realizes is something that he can't let show right now or ever, not when there is so much to do. Regis had given him a final task, and while, in a sense, the task has been complete, he knows it needs to continue. Insomnia, Lucis, needed to be rebuilt, from the ground up, not forgetting all that happened.

The pain the both of them feels is something he understands all too well. The moment Regis fell lies burned into his heart. When Ignis can't speak, he nods ever so slightly in acceptance. Right then. He looks towards the Citadel, his lips thin, before going to walk towards the front doors when suddenly Gladio comes out of them. He pointedly sheathes his blade at that point, seeing the tightness in Gladio's expression, the redness around his eyes as the Shield comes closer.

They share a look. Gladio nods. Confirmation.

Cor glances down and to the side as he hears a broken sound out of Prompt, who had seen the nod.