A Small Case Of The Nargles

Harry Potter and friends are returning for their last year at Hogwarts following the Great War. All goes well until a strange book from the Restricted section of the library shoots a spell at Harry, turning him into an odd creature some think are extinct while others think aren't real. Only one girl knows about such creatures; will she be able to turn him back? Does he want to be turned back?

Note: Last time I checked, I'm not J.K. Rowling. Therefore, I do not own Harry Potter or any elements from the series. This is a fun little story wrote in admiration for the series. Thanks!