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.
But we offered them the chance to be siblings
out of the goodness of our hearts.
Aus reiner Gutherzigkeit haben wir ihnen
angeboten, unsere Geschwister zu werden.
Les ofrecimos el juramento
porque no había otra opción.
Les ofrecimos el juramento
porque no había otra opción.
On leur a offert de devenir
nos sœurs par manque de choix.
Ma gli abbiamo offerto la possibilità 
di essere fratelli, per bontà di cuore.
Só oferecemos a chance de serem irmãos
porque não tivemos escolha.
Но мы предложили им побрататься 
по доброте душевной.