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'll protect what I choose to protect,
Ich beschütze das,
was ich beschützen möchte,
Protejo lo que decido proteger,
Protejo lo que decido proteger,
J’ai voulu vous protéger
et je l’ai fait.
Proteggerò chi ho scelto di proteggere,
Irei proteger o que eu escolher proteger
Решил защищать — защищу.