Operation "Red Night" is canceled and the kids come home to a joyous reunion. They've gotten their magic bags and succeeded in their quest.  But a strange man is going around Akihabara asking all the girls to marry him.
Goodbye, big sister.
Auf Wiedersehen, Schwester.
Adiós, hermana.
Au revoir, grande sœur.
Arrivederci, sorella.
Adeus, Onee-chan.
Пока, сестрица.