Elsie's cake ended up blowing up! Keima yells at Elsie for lacking common sense, so Elsie goes to the library to study up on common sense in the human world. Maijima Academy's library houses an expansive collection of books. Elsie gets excited after finding a flashy picture book, but then she detects a loose soul in the librarian, Shiori Shiomiya! Shiori is a quiet and soft-spoken girl. It will be difficult to get her to speak, much less open up...