One hot summer day, the 4 girls and Haruko are playing in the pool. They notice that Pets is missing. Kana later hears from her classmate Aida that Pet's family is very rich and they are moving to Mars. 
I didn't know that
I didn't know anything.
Und ich wusste nicht einmal,
dass ich keine Ahnung hatte.
Ni siquiera sabía que no la conocía.
Ni siquiera sabía que no la conocía.
Je n’étais même pas consciente
que je ne savais rien.
Non sapevo nemmeno di non sapere.
Não sabia que eu
não sabia de nada.
Не знала даже того,
что ничего не знала.