Where did you get that idea? There are plenty of adult games using full motion video. I'm not aware of any special rule we might have on itch.io about it.
That said, I'm not sure what you mean by "not exposing the personality". If you're using someone's likeness, you need their permission even if their face is hidden. Our staff might not check upfront, but if someone complains you could have your game removed or worse. Please follow the law, thanks.
It's my personal idea. I'm kinda obsessed with it because I haven't found anything similar on the entire web.
I scrolled itch with tag Adult down to the hole and haven't noticed a single one that uses real people representation. That's what I'm doubt about. It leads me to think that this is prohibited for some reason.
EDIT:
I'm actually found a couple games with embedded video content. Much deeper than I expected but it looks like my idea might have a greenlight.
