I'm afraid I don't have a very concise answer for you. Though I suppose the easiest explanation would be because he doesn't like me.

[Understatement.]

But that's just the sort of person Sync is. He's unpredictable, and can be very dangerous if you don't keep your guard up around him.

[He's not really sure how Sync would treat Florian. He didn't seem to think very positively of him the one time Ion was there when they met... though if anything, he's more concerned what would happen if he mistook Florian for Ion and tried something. After all, he has far more reasons to hate Ion than Florian.]