Identifying the Kingdom Hearts in BBS

It assumes you've played KHUX, just like the entirety of KH assumes you shelled out a fortune to follow it's story since 2004 when CoM went to GBA. Even with having played the game though I do consider the movie a let down as well. I wasn't expecting much, the visuals were quite nice, the Master was hilarious buuuuuttttt it didn't really do anything.
You'll be sad with the game as well then. There's story missions for the war but you have a few foreteller battles and that's it I think. Other stuff happens like with Ephemer but you don't get a visual or explanation as to why KH appears, why Ava changes her mind to fight in the war (we only see her find Luxu) and thats about it before it's "season two" begins.

UX shows you the war from the guilds and the movie honestly just gives ya a bit of background of the foretellers, like their given assignments. Nothing really lore or explanatory.