So this is the story about young Jeremy fisher, who was desperate for a friend.
He longed for a friend so bad, his imagination came to life one day as a girl named Evelyn Archer.
She wasn't normal, everyone knew that. Only the students saw her.
Jeremy grows closer to Evelyn over the course of a month. Since Evelyn was just a figment of imagination she doesn't entirely know why she exists. As Jeremy gets to know her more his longing for a friend gets less and less until it cease to exist. Since Evelyn is Jeremy's imagination longing for a friend. When his longing cease to exist so does Evelyn.