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...
That sounds like it will be 
quite the training, then.
يبدو وكأنّه سيكون بمثابة تدريب إذاً
Das ist bestimmt gutes Training.
Es un buen entrenamiento.
Es un buen entrenamiento.
J’imagine bien ce que ça donne !
Un gran bell'allenamento, 
a quanto mi pare di capire.
Isso parece bastante treinamento.
Похоже, его ждёт серьёзное обучение.