A while back, I posted about a nude Yoshizawa model in Persona 5 Royal; now that I've played more, I think it is used - for her Persona awakening scene, since it's in the form of a 'magical girl transformation' sequence (albeit with a sparkly-pink overlay to cover it up during the sequence, a la 'magical girl'). So that's the mystery solved, I suppose.
This seems to work.