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...
as long as we're on Earth,
،ما دمنا في الأرض
sur Terre,
il y a trop de « témoins »…
finché ci troviamo sulla Terra
Enquanto estivermos na Terra,
на Земле есть социальные
нормы и прочее...