One summer’s day, Usada and Kotora go to the library to do their homework. Kotora seriously gets to her studies, but Usagi has her head up in the clouds. She wanders over to a bookshed deep inside, and brings back a big, thick book.

“I found this interesting looking book!”

Kotora looks back at her quizzically. Suddenly, a slip of paper falls out from the book. The letter reads:

“Look for Alice.”

As soon as they read the words, the two are enveloped in a blinding light.