[When the threat against Ignis' prince doesn't earn the offense he's expecting, his lips pull in a subtle frown as he's forced to reevaluate his decision to move forward, to allow this interaction to continue and follow the other man to his home. A year ago, it never would have come this far. Assuming he had even entertained the conversation at the teahouse—unlikely—Itachi fought to keep immense, secretive distances between himself and everyone else.

Ignis claims he acts precisely and efficiently, yet here he is, pursuing an unnecessary companionship. The grim self-reflection distracts Itachi as they walk; it's only Ignis' voice that draws him out of the slump of his thoughts.

His expression is more difficult to read as he studies the other man.]

So the expectation is that you fulfill his every need. [Get a job and learn some responsibility, Noctis, come on.] … I've fared well enough. Perhaps better than others, given that arriving in another dimension isn't new to me now.

[Itachi’s gaze drifts away, ahead.]

Syncing feels similar to the principle of another world I visited. The emotional connection is significant as well, when it's successfully managed.