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.
Oh, that's all...
Oh, ach so …
Ah, era eso…
Pues vale…
Ah, tu parlais de ça…
Je veux dire, vous parliez de ça.
Oh, tutto qui...
Ah, então é isso...
Ах, вот оно что...