As daughter of the former demon lord, Mio's foster parents were slain by powerful demons after her life. Still seeking to slay her, Basara reveals himself as a member of the hero clan--an enemy of the demons--and vows to protect Mio as a member of his family.
I can't imagine you'd go through the trouble 
of saving us from those demonic beasts
Ich kann mir nicht vorstellen, dass du uns
vor diesen dämonischen Biestern rettest ...
No creo que intentes envenenarme después 
de haberte tomado las molestias
No creo que intentes envenenarme 
después de haberte tomado la molestia
Je ne pense pas que
tu t’embêterais à nous empoisonner
Non credo che ti saresti preso la briga
di salvarci da quei demoni
Eu não imagino que você se daria ao trabalho
 de nos salvar daqueles demônios selvagens
Не думаю, что ты стал бы нас спасать и 
домой возвращать, чтобы просто отравить.