Noctis does Nyx the courtesy of finally glancing away when he sees how badly the Glaive is reacting. He may not know exactly what Nyx's feelings for Luna are, but he knows her, and he knows how profoundly she can affect the heart. Seeing Nyx's grief and rage, he feels echoes of his own bubbling up again from behind the walls of time and duty that were all that allowed him to continue when they finally departed Altissia. The gleam of magic in Nyx's eyes when their gazes meet again doesn't surprise him, knowing what he now knows about what happened in Insomnia, but he's unaware of the answering gleam in his own as he and Carbuncle both sense the shifting energy in the room.

She was that future, Nyx says, and something even heavier than grief seems to fall on Noctis' shoulders, make him look older than he is for a moment.

"Yeah," he says softly, gaze growing a bit distant. Thinking about the dress proudly displayed in the window of a shop in Altissia. The little girl in Tenebrae who gushed about Luna's true feelings. The entries in her journal, clearly expressing her anticipation for their reunion. The people all across the countryside who praised her name for healing them or their loved ones of the scourge. The way she stood tall and unshaken in the face of Leviathan's fury, giving everything she had just to give Noctis a fighting chance. When he replies to Nyx just before the Glaive draws his weapon, his voice is rough around the edges.

"She was mine, too."

And then Nyx is shouting, a sound that feels to Noctis as though it contains the anguish and wrath of all of Lucis in it; and when he calls a dagger to hand and whips it through the air to catch up, it's as much out of a sense that he needs to be there for Nyx as his king as it is his own need to make Ardyn pay for everything he's done.