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.
Now, let's get back down to business.
Gut, dann zurück zum Geschäftlichen.
Retomemos la conversación.
Sigamos por donde lo dejamos.
Retournons à nos moutons.
Ora, torniamo agli affari.
Agora vamos ao que realmente importa.
А теперь вернёмся к делу.