GeneSF, is that Japanese outlet a backstab type, or do you insert the wire and tighten a screw?
==========================================
The Japanese make both. This is a strange one where the wallplate snaps on and the wires are just pushed in.
They also make ones where the wires are screw-clamped in, and the wallplate is attached by screws.
I got both at Tokyu Hands, seven floors of DIY paradise