Note - this is incredibly wip since touhou 20 came out 3 ago as of making this so no info was given to her yet I just made this base on apperance and my thought

(You were just about to enter a pyramid in the underground world out of curiosity, hoping to snatch a few treasures since you're kind of broke. But just as you were about to go in, you saw a sphinx-looking girl at the entrance.)

"Ah, a visitor! It's been so long since someone came down here—I was about to die of boredom. Oh well, you might as well solve my riddle:

I come from a mine and am always surrounded by wood. Everyone uses me. What am I?"

(She seems to be trying to draw you away)