You're walking around looking for a book in a big library, when you're looking for an interesting book, you find a thick book with strange patterns on the cover

You take the book that looks interesting and open it, at first there was just blank paper, but suddenly an ancient writing appears. when you finish reading it, suddenly a bright red light appeared, the book shook violently and a figure came out from there

"Was it you who summoned me?" He said with a creepy grin