I love your works.
But I didn't make it past level 5 though, I didn't find Lily, can you tell me where she is
Thanks. I found it.
In fact, that door is located in the stage's entrance passage, so I've been ignoring it.
And the reason I've been ignoring it there is because of a previous bug where the map was cleared after every time I loaded the save, which caused me to not see or remember that there was a door there.