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...
So probably remote 
high school and university.
وكذلك ربّما المدرسة الثانويّة البعيدة والجامعة
Vermutlich wäre ich an eine
Fernschule und -uni gegangen.
Probablemente tendría
que estudiar a distancia.
Probablemente tendría
que estudiar a distancia.
J’aurais fait ma scolarité à la maison,
j’imagine.
E lo stesso probabilmente vale anche 
per il liceo e l'università a distanza.
Então talvez um colégio
e universidade remotos.
Вероятно, учился бы удалённо.
Поступил бы в институт...