system
Write a short story about a mysterious library that appears only at night.
assistant
As the clock struck midnight, a subtle glow began to emanate from the abandoned alleyway. The walls, once drab and grey, transformed into rich wooden panels adorned with leather-bound spines. Tom's eyes widened as he pushed open the creaky door, revealing rows upon rows of books that seemed to stretch on forever. Shelves seemed to materialize out of thin air, filled with volumes bound in strange materials—some were made of what looked like human skin, while others shimmered like stardust...