This is probably the modt genuinely unsettled I've ever been by something FNAF related and that's considering that (for all their flaws, even) things like Graveyard Shift at Freddy's exist and elicit a similar if not the exact same psychological response.
I mean that quite literally, excellent job. Chica's face here actually made me recoil a little from just how uncanny and unsettling it is. Again, excellent job. :)
