the youtube vid is her retirement message, saw it some time after Fade Out came out.
The thing posted in Japanese says something about her starting a family (she was pregnant and gave birth (?) to a kid some time ago.)
I think she has the ability to go mainstream... maybe in dramas or something like that.
If she goes into AV I'd probably be disappointed after the first vid. There's just so much you can do with it before it gets old.
I was about to ask about that last scene in Final 3/3 too. I guess it's a mock teaser for a video that will not come because she's retiring. Hence the "No Make" thing. Unless it means no makeup :p
Made my heart skip a beat though.