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.
So, I had an idea.
Daher hab ich mir überlegt …
Entonces, tuve una idea.
Se me ha ocurrido una idea.
J’ai donc eu une petite idée.
Bem, eu tive uma ideia.