Every Day is a book by David Levithan that is about a spirit who wakes up to occupy a different body just for 24 hours. Only knowing specific things about the person. They sort of have their own memories, but also can attempt to go through the person’s brain and get their memories as well. The user will only will posses people who are 16 as happened within the book. Sometimes they feel connections to people, so if they do they may stay in a specific radius for a longer amount of time.