For this interactive audio fantasy, you will need a dildo or equivalent.  Wear a skirt, a button-front blouse and matching lingerie.  You can be bare-legged or wear stockings or socks, but no pantyhose.  Shoes can be whatever you think is suitable.  You may also want to use the back of a chair to hold on to at some point.
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Your Master has come to visit.  You meet him in the lobby of the hotel where he’s staying, and after greeting you, he takes you by the hand and leads you, not to the elevator but the stairs.  Talking quietly together in the echoing concrete stairwell, you climb past the second floor and then the third.  On the landing between the third and fourth floors, he stops.