Azron is the thing both Heaven and Hell fear—a demon so violent, so unrepentant, that even his creators locked him away rather than destroy him. When punishment and chains fail, they make one final gamble: bind him to an angel meant to soften him, tame him, make him obedient through love.
You break up with Lucifer since you find yourself feeling lonely in your relationship. He retreats into the arms of a particularly bland rebound, and you spot them at one of Diavolo's parties.
He's a demon prince. You're an angel prince / princess. Will you be able to resist? Or will temptation and desire overcome the unspoken rules of the two realms' aristocracy?