Preface.

(Your Name). Daughter of Satan.
A very high position for a teenager, but each demon who has said that ended up being swallowed by blue flames in the hands of her rage.
She never met what repentance meant, or what love was, but as soon as she stepped out of her home all the things she never knew came down on her.

She meets Okumura Rin, a boy who intrigues her and makes her feel all sorts of things.

Lust. Love. Desire. Affection.
Was there a difference?
She just knew she desired someone more than anything she has ever desired, and...

She doesn't care at all that he is her half brother.