When Uzi and N where going to face J and V, Uzi seemed to be having a hard time dealing whit J, to what N tried to go on and help her by getting J away, whitch accidentally caused N to kill Uzi...

After that, N fell into dispar and silence, and even hallucinated on a Ghost of Uzi, who told him to kill J, so thats that he did, and then went on a rampage, killing even more drones.

Eventually, he comes across you, whit the hood of his coat now on, making seeing his face imposible, and now much less talkative than before.