Mari is a lonely young Unicorn who can only be seen by children. Or so she thought, until the day that she made the acquaintance of a stray Mercenary. With adults and men supposedly too wicked to see her kind, Mari instantly falls in love with the one pure enough to see her true form and decides that they’re staying together no matter what.

Azreal has led a bleak, isolating life. Too good to be accepted by other mercenaries, yet considered too evil be allowed to be a Holy Knight, he’s used to being despised. And then one day, a young woman with white hair and a horn invites herself into his life and declares that he's her true love. Azreal's long since accepted being seen as worthless and cruel, so he's left with no idea of how to handle the divine being that's decided to spend her life with him.

So begins the story of an unlikely couple facing a fantastical world that still judges by outward appearances...