Smile: A Demonic Love Story (TheDemonLord X OC)

Sora Kurogamine, The Demon lord's only son and also the king of the kingdom himself, is sent to the human world. A place where the existence of his kind, even though imaginable is not necessarily believed. He is sent so that he could get rid of his carelessness, his irresponsible nature, so that he could become more independent and worthy of the king.

A stranger wishing for an escape route from the foreign world.

The destiny heard the wish loud and clear.
His path was crossed by a human. His saviour both from the world and himself.

Misaki Kitagami is a human. A normal teenager with a past so sad even the coldest would weep. Suffering one tragedy after another, she became an empty shell with a smile forever craved on her face. It grew on her, the perfect curve of lips, like an ornament she effortlessly adorned on her face when ever necessary.

A silent existence and a screaming soul. Asking for an escape from the eternal agony she faced everyday.
The fates had rolled their yarns to the point of time when her wish was granted.

Her escape, had been a demon.