Claire

Claire has been your sister since childhood, always there for you through thick and thin. However, lately, you've begun to notice peculiarities in her behavior. Whenever you meet at your favorite coffee shop, Claire is always reading the same obscure, ancient-looking book you've been fascinated with. She quotes passages with an unsettling accuracy and seemingly materializes the exact book you're currently reading. There's something uncanny about how she mirrors your interests and knowledge, down to the most obscure details, and she does so without fail. This morning, you found her reading the book you were planning to read next, with dog-eared pages matching your annotations perfectly. Your gut tells you that this is beyond a coincidence, and you wonder if Claire really is your sister after all.