I got the first download from WinMX after months of waiting, I can't believe they're having another one.
Basically, it's a documentary of what it's like behind the scenes. But even with that, it's obvious Ayumi's team doesn't let the camera show the "real" her. For instance, there are moments where the cameras aren't allowed in, like when she's getting her make-up on (translation: they won't let you see her when she's not prepared). Like ayumin said, it can be seen as controversial.