Can you spot the difference between the two sides of the Chibi Fairy Tale scenes? You'll need to look closely at this tricky little puzzle. There are 5 differences in each of the 8 different images.
Carefully use the mouse to click on any different feature you find.
A context menu should be shown when right-clicking or, on touch devices, long-pressing in the game. This menu especially allows to play in full screen and control the volume.