Hello BlackBiyrd, regarding the game lisa and the grimoire I seem to have the same issue as you as I am trying to open the stone door. I have the bomb and it still will not open and according to you, I need a hammer? Where can I find it if I do? the bomb can be found going to the top left building with stairs, and keep on going through the next two staircases until you pop out in town and then it is a little ways out of town from there inside the only building. You can inside and find a little chest with the bomb.

Happy 2022 and may it be a very good year for you :)

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Good friend