Kyo tries to avoid showing his face in plain sight as much as possible (he’s extremely self-conscious about his scars)
so he normally wears his mask to hide them but since his mask is very iconic and recognizable as a criminal/terrorist icon he has no choice but to wear it less in public and show his actual face

that and has to wear casual/street clothes to ‘blend in’
his disfigured face brings a lot of stares and suspicious looks so he tries to keep his presence to a minimum

messy sketchpage but pretty much a reference to his scar placement and him in his current uniform