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.
Most likely, since Mio-sama 
refused the kiss of loyalty...
Und da Mio-sama den Kuss
der Loyalität verweigert hat ...
Es probable que esto se deba a que Mio-sama 
se negó a dar el beso de lealtad...
Es probable que esto se deba a que Mio-sama 
se negó a dar el beso de lealtad...
Il a dû s’activer
parce qu’elle a rejeté le baisemain…
Probabilmente, dato che Mio-sama
 ha rifiutato di dare il bacio della lealtà...
Muito provavelmente, já que a Mio-sama
 se recusou a dar o beijo de lealdade...
Судя по всему, из-за того, 
что госпожа Мио отказалась от поцелуя верности...