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.
"The Oath of the Chalice."
„Der Kelch-Eid“.
El juramento del cáliz.
El juramento del cáliz.
Le serment de la coupe.
"Il Giuramento del Calice"
"O Juramento do Cálice".
Клятва Кубка.