They really can't have a conversation without poking some at one another. Then there's a discussion of how Bonds feel that carries on into the pragmatism of how the Ascian created empires.
Conversation that occurs upon first meetings. Vanitas explains some of the more hostile intentions of the natives and Sypha wishes to attend the trial.
Sora's arrival marks the end of Vanitas going without a Bond. Being sick and near the end of his ability to do without, Sora and Mira both encourage Vanitas to at least let them help him.
Vanitas has no issues with Roxas. Just his face. They aren't really too different, borrowing a look from another. However they cannot understand one another's positions.
PART 1