Yuuto's been sent to another world, where he is now commander, or "Patriarch" of a clan of warriors.  To survive in this new world, he uses his cell phone, his only connection to the girl he loves back home.
Yuuto-dono, you're still young.
Herr Yuuto, Ihr seid noch unerfahren.
Yuuto, todavía eres joven.
Yuuto, todavía eres joven.
Yuuto, signore, siete ancora giovane.
Yuuto-dono, você ainda é jovem.
Юто, ты ещё молод.