Hi fuki! Thanks for the support!
All the stuff that can be imported into the rpg makermv are in the related folder ("Modern_Interiors" -> "RPG_Makers" ->"RPG_Maker_MV" ). In the mv folder you will also find a .txt guide I personally wrote to import all the stuff!
The character generator is actually unavailable for the rpg maker due to the way the software treats the spritesheets, unlickily you can't upload a sprite sheet with all the animations into the rpg maker cause the frame limit for each row is 3 and the row limit is 4.
Btw, you will still find a really lite version of the Character Generator converted for the rpg makers, I'm sorry but it's literally impossible to do more :s
Lastly, if you are really new to game developing, I suggest you to practice a bit with the rpg maker and then switch to Game Maker Studio (it has recently become free), where you can use this asset (and many others) at its full potential!
Good luck and happy game-developing, don't worry for asking in case ;)