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.
she should obediently swear 
her loyalty to you by choice.
sollte sie dir gehorsam
ihre Loyalität schwören.
potrebbe giurarti fedeltà per sua scelta.
ela deverá obedientemente se 
submeter a você por força maior.