In the Diva Room, you can deliver them presents and do some interactivity with them but doing either one of these too much can drive them mad. Even worse is that your presents may be rejected if you try to place too much stuffs in the room as if there's not enough space. Certain items cannot be given as presents so you have to place them yourself in the rooms for decoration. Other presents will trigger the cutscenes which may be another positive thing about the Diva Room. So, you should know what you're doing. Sometimes, they will request you for certain stuffs so you will need to follow those requests. Doing so successfully will increase the friendship levels quicker.
Unfortunately, some of the interactivities are impossible to do so between virtual and reality such as having to hug them. Some of the cutscenes that involve them doing something to you are kind of pointless as well. This is way much further than the prequel and the fever mode for that interactivity is obviously to make things more complicated.
There are existing songs from the previous games but with newer models and different scenes.
Project Diva F 2nd will be released for Playstation 3 and Vita on March 6th.
Screenshots can be found there:
- http://www.4gamer.net/games/225/G022515/20140109018/
- http://www.siliconera.com/2014/01/17/miku-doesnt-like-fawn-much/