Where do I change Hope’s costume?

You can change Hope’s costume in the lockers near the end of the tutorial. The tutorial ends immediately before Hope enters the Atrium and overhears two Prizrak as they enter the Library.

Be aware that, if you select the Student costume, you will not be able to change the costume again during the tutorial section.

For all outfits, your costume will be set for the rest of the game after you exit the tutorial.