In 'Whose Shadow is That?', you play as Alex, an underappreciated night-shift librarian at a sprawling, ancient library. One fateful evening, a strange shadow of an unknown figure appears on the walls among the towering bookshelves. As the clock ticks, the shadows begin to interact with the written words around them, revealing long-forgotten secrets and lost stories. Players must navigate through branching narratives, decipher clues from the shadows, and solve dramatic dilemmas that confront Alex's past while avoiding the relentless pursuit of shadowy figures - each with their own motives. The deeper you delve into the library's mysteries, the closer you come to discovering the truth behind the eerie shadow, leading to a shocking climax that forces a confrontation with both the supernatural and your own mind.