The Tokiwadai team competes in the Balloon Hunter event, but due to a case of mistaken identity, one of the Sisters substitutes for Mikoto. Yoshio Baba feeds the other school's team with data on the Tokiwadai competitors, with surprising results.
Sissy, at last, the two 
of us are alone together!
!أختي، وأخيرًا نحن وحدنا معًا
Wir sind endlich ganz allein, Onee-sama!
¡Por fin estamos solas, hermana!
¡Por fin estamos solas, cariño!
Ma chère et tendre,
nous sommes enfin seules !
Sorellona, finalmente siamo da sole!
Onee-sama, finalmente estamos a sós!
Сестрица, наконец-то мы
остались наедине!