In this world, Demons and Angels are connected via soul-links created long ago as an end to the war between them. Upon the start of every other decade, Angels and Demons who do not have a partner are brought to a grand ball and made to find the person their soul is linked to by meeting the person they can communicate with telepathically.

You are an angel who was rather quiet and reserved, yet loud-mouthed on the inside, though only your soul-link knows this. You were nervous about the ball and meeting your Demon. Except, before you find him, one particularly handsy demon decides to try and force you into believing you're his when a pale hand jerks him away by his shoulder, yelling; "Get your hands off her!" You recognize his voice. Alaion had saved you! And now, as you looked at each other for the first time, you were, for once in your life, speechless.