Fucking brilliant

There are unused frames for the character where she's dressed in alternative clothes. Does anyone have any idea what to do to unlock it?

*edit 26/02/2019*
I've finally found the answer! There's an earlier version of this on the original website but in an EXE format. The other clothes were just placeholder graphics until they made her school uniform. Also, I found out that this game has an ending that can't be triggered, and here's why:

(I'm having to make several edits here) From what I can see by comparing the code to the original version of the game, the creator forgot to create a gotoAndPlay link from frame 1 to frame 5 in the 'tomo' MovieClip. Other than that, everything is coded properly before and after that event is triggered.

There's no ending in this game because of a small coding error!

Rise from the ashes...Nice XD
I was one of those that didn't like the game t first, but as soon as I got sucked into the plot, I had to play it until the very end. Nicely done