JinKazaragi: If I understand your post correctly, you're talking about some kind of Gallery for Cutscenes.
Something like that is possibly without a Cloud-system or the old savegames. Every game has System/settings-file which exists separately from the savegame. Usually in that file it's also saved what is unlocked in the game (like that scenes in the Gallery-Mode for example).
Thanks, i think i understand. Yeah, in main menu, there is a submenu in which you can watch story related cutscenes. Strangely, somehow, i am able to watch cutscenes from older game decisions of mine...
By the way, since your username is what it is, did the manga "Area D" really end? Second season was so very small and quick to be done with and it is under "completed" tag...