That question brought him up short, Sasuke glancing at Iruka too sharply before he reined it in: was it a general inquiry? Iruka being polite, as he knew the man to be? Or had he been incautious about his own behaviour?

When he answered, his tone wasn't precisely cautious -- but it did its best to not invite further exploration of the subject. "I'm doing well, Iruka-sensei. And yourself?"