Seina Yamada has been waiting so long to return to his home, Earth.
But so much has changed; his sister is engaged to Kiriko's brother Kai,
and his parents' old store is now a huge mall.
Furthermore, he is to stay at Kiriko's mother's house...
What do you think would have happened 
if you hadn't gone to space?
ماذا كان برأيك سيحدث لو
لم تذهب إلى الفضاء؟
Wenn du nicht ins Weltall
gegangen wärst,
Si no hubieras ido al espacio,
¿qué crees que habría pasado?
Si no hubieras ido al espacio,
¿qué crees que habría pasado?
Dis-moi,
Cosa pensi sarebbe successo 
se tu non fossi partito per lo spazio, Seina?
O que você acha que teria acontecido
se não tivesse ido para o espaço?
Сэйна,