I've gotten the little dialogue at the end where Robin talks about starting a new band and the pop-up happens that says open mode is unlocked?
Update: It worked! The option to play open mode is showing up finally. Thanks for your help <3
Okay, I feel silly having to ask this, but I cannot for the life of me figure out how to start the open mode? I've played through story mode for two routes and the only buttons I have on the main menu are new band, load band, options, and quit. (And then the memorabilia and achievements etc.) If I click new band it seems to start story mode again? Do I just play through the beginning and trigger open mode later somehow?
(Also, side note! This game is awesome I can't stop playing it. Maybe my computer is keeping me out of open mode for my own health?)