[makeitdouble]

Tokyo fundamentally doesn't define pedestrian only zones except in very specific conditions.

I get why you'd feel unsafe, but IMHO it's the exact opposite effect: 99% of the streets don't have a sidewalk or anything specific for pedestrian, and thus are pedestrian first.

Small kids, dogs, cats, elderlies will be walking in the middle of the street. As a result cars drive way slower than they'd do in Paris and they need to be way more alert to what's happening. Every small street is basically the same as the pedestrian zone in the middle of Paris.