I have an idea that this guy would have found out one way or another; that's not the sort of thing you can hide forever, right? [He wouldn't have expected this situation, not at all, but it probably would have come to light sooner or later, unexpected or otherwise.]

What sort of authority does Robin have over you, anyway? You know you're not obligated to honor that sort of thing here; whatever the situation back home is, nobody can force you to be in someone's service here.

[Though he knows it can be hard to break free of that sort of thing. If Xemnas showed up here, he would probably still follow orders, because he still doesn't want to get erased.]