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...
If you hadn't gone to space,
،لو لم تذهب إلى الفضاء
Si no hubieras ido al espacio,
Si no hubieras ido al espacio,
Ça aurait pu être moi,
si tu n’étais pas allé dans l’espace !
Se tu non fossi andato nello spazio,
Se não tivesse ido para o espaço,
Если бы ты не улетел, огорчалась бы я.