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 just pretended I knew.
Everything in my life...
Ich tat einfach jeden Tag so,
als wüsste ich es alles …
Solo creía que sí.
Solo creía que sí.
Je croyais juste tout savoir.
Ero solo convinta di sapere.
Eu só fingia que sabia.
Притворялась, будто бы знала.
А на деле вся жизнь...