Itachi had heard the sounds of a fight. He had never really learned to mind his own business, and then he'd been placed in the Intel division of ANBU where minding your own business was considered both stupid and unprofessional. Itachi had arrived in time to see the mud web go up, and had decided the girl had her enemies well in hand. He was impressed with the genjutsu. Three targets with one genjutsu wasn't easy.

Itachi dropped from the trees when he saw the fight was over. His affiliation was marked plainly enough by his flak vest and headband, he didn't worry about being attacked. That wasn't to say he wasn't ready if he were attacked.

"That was very neatly done," Itachi complimented as he got close enough to speak.