>>8937228Each version has different companies involved in their production. Million Live/Side-M is all Bamco, Deresute involves Cygames, Shiny involves Akatsuki (I think). Each game/franchise also works with a different music label. Million Live and Side-M release under Lantis while Cinderella Girls and the original Idolm@ster are under Columbia. So as you can imagine, permissions can get very weird.
Heck, one consequence of this is that even Bamco needs permissions to use its own assets. For example, when Theater Days was porting old cards from the older game, Million Live (where they had the cooperation of A-1 Pictures), they had to redraw the original 13 members of idolm@ster for some reason.
