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...
it would feel like you're 
in your own neighborhood.
فسيشعر المرء وكأنّه في حيّه
sarà un po' come restare nella propria zona.