You are a pharmacologist.
While looking at a newspaper published a century ago for a new study,
You read an article that a mysterious stone was found in "Sowls" region.
It is said that the stone makes small sound with light and feels like talking to a person who holding the stone in the hand.
You thought it was clear that the stone is a rare and valuable pharmaceutical ingredient
From that day, you wander through all kinds of places looking for the stone.
You managed to get a valuable and mysterious stone after a hard journey.
You decided to take a break at the Hotel Sowls.
But the next morning, someone in the hotel stole the stone!
Who in the hotel took the stone? for what purpose?
Can you find a stone in this strange and mysterious hotel and find out the secret of the hotel?
If you can't...? Various endings are waiting for you.