Allura is a half-blood succubus.
Even if a pure-blooded succubus does not have the curse-like fate, she is still inevitably subject to rumors.
Demonbloods are used to extremes of love and hate.
But she fell in love with a human being, using the love recognized by the world.
Fortunately, Caesar does love her too——
Alola prayed to the gods and exchanged oaths to bind each other:
"Exchange loyalty for loyalty, and exchange true love for true love. From now on, I will depend on you in life and death, and will always be by your side."
Caesar
Purpose: All experiences have their meaning.