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.
Worry not.
Sorgt Euch nicht.
No te preocupes.
No te preocupes.
Ne vous inquiétez pas.
Non temete.
Não se preocupem.
Не волнуйся.