Thank you for your comment! I’ll think about making the tutorial clearer to understand in future updates :D
I actually use a graphic tablet to draw - I try to make the art a little bit more pixelly by using a pixel brush for the in-game portraits/cutscenes.
Here's the combination lock just in case!
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It’s based on the rocks outside, and while there is a hint, by now I see that I should probably have made it clearer.