Analysis: Welcome to the N.H.K.
-The idea of the "NHK" is a metaphor for the driving force in one's life. Sato's multiple names for the organization all are linked to other characters and describe their Fatal Flaws
, with his own being NHK because of his anti-social lifestyle. In the end, Sato and Misaki's NHK is renamed to the National Hostage Association because their driving force is surviving for the sake of the other.