Rikka, Chiyo, Sekine and Tsubasa seem like regular middle-school girls, but they all have their own secrets.
Farewell, my Earthling friends!
!وداعا يا أصدقائي الأرضيّين
Auf dass wir uns wiedersehen,
meine Erden-Freunde!
¡Adiós, amigas terráqueas!
¡Adiós, amigas terráqueas!
On se retrouvera,
amies terriennes !
Addio, mie amiche terrestri!
Até um dia, amigas da Terra!
Прощайте, мои друзья земляне!