This doesn't answer my question in the slightest.
I asked the team if they did something about the summer costumes and Mog Amulated.
And Mog Amulet isn't just something that's high level item in the game, it's literally goddamn impossible to get this item in the game. It was Square Enix Members exclusive. So unless you use a cheat code, you can't get it. That's why I'm asking if they made it possible to find ingame.
Secondly, it doesn't answer anything about my question with costumes, you MUST have the costumes if you want to get the second ending. If you just play the game second time without the summer costumes, you will get the same ending as first one.
And since
coredecepts said that the demo you linked is most likely incompatible, here I ask, which demo IS compatible then?