The demo available on this site has just been updated. While the gameplay hasn't changed much, there were polish improvements as per player feedback. Here are the big changes:

Poster Artistry Undo and Redo controls
If you make just a tiny mistake on your poster, it sucks having to completely reset the drawing. There was a technical reason I didn't offer an eraser tool or similar, but it was more of an excuse. Now, you can undo up to 20 template and/or freehand drawings.

Art polish
Elf, Tiger, Squilly, and Crimson have received another art pass.
I am happy with their overall look, but contrast and body lines were rather off on some of them.

Multiple voices
While each idol's voice clip was lovingly chosen to fit their personality, that single voice clip being repeated could become grating. Each idol (and Teacher) now has five different voice clips, giving them more variety while maintaining their distinct tones.

Explanation rework
Several of Butterfly's dialogues and explanations have been tweaked to make them more succinct and better at explaining.