He is neither and both, somehow ・・・

Bingo.

The unit itself is an NPC but someone is working it from the outside . . . So the "bug" exists outside the game ・・・

And the only independent body that can meddle in the programming is, as we know. . .

So only someone from inside the AMU offices can do it. . .

Yes

AMU has an integrated defence system so. . .

So then ・・・

The Internal Admin Sec ・・・

She knows the Internal Administration Section better than anyone.

So that's why Mikoto had to be ・・・

Mikoto-san, should be able to help us out somehow . . . I think . . .

. . . And we might receive some due credit that way too . . .

That' s probably the most important reason for you to send to her out . . .