In search of Hanako's secrets, Nene and Kou enter the fifth Wonder, the 4 O'clock Library. It's books contain the past and future of every student their school has ever had, but some knowledge comes at a price.
White books are for living people,
Die weißen Bücher
gehören den Lebenden.
Los libros blancos son
para gente viva,
Los libros blancos son de los vivos
Les livres blancs concernent les vivants.
Os livros brancos
falam sobre os vivos.