Kagami had quite the clear idea on what the other man was probably thinking, and watched himself when he smiled at the realization. Don't get so offended when other people don't give you the reaction you were expecting, young man.

"Itachi--" He called after him, not really expecting Itachi to turn around and stop for him. "Thank you." That was what he had been expecting, hadn't he? Some form of acknowledgment for all his trouble.