Natsume is jumped by a group of Youkai trying to steal the Book of Friends for their master. Once captured, Natsume discovers that an old problem is back in a big way.
If you're Natsume-sama, 
you must have the Book of Friends.
Si usted es Natsume-sama, debería 
tener el Libro de los Amigos.
Si realmente es don Natsume,
supongo que llevará encima el libro de los amigos.
Se você é o Natsume, então 
você tem o Livro dos Amigos.