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Can’t speak to the law but I’ve never seen that type. Also, as the plate in Japan has a special seal over one of the attachment screws, I’m sure you can’t.
It is illegal to obscure the license plates in front and back. A front license plate is mandatory, and the rear is sealed so you can't remove or reattach.
Short answer: Nope.
Longer answer: Only the metal plates are used here. My guess is that it will be a long time before a sticker-style plate shows up here.