“You and I are fated mates, bound by a Blood Covenant.”

In a country where every noble is supposed to possess magical power, Lady Serena was born without any magic at all.
Abused by her family, she had even lost the meaning of living.

Then, the one who appears before her is Alvis, the King of Vampires who rules the night.
He tells her—

“Within your body flows Mithril Blood, the greatest treasure to vampires.”

Is this a blessing granted to a girl who stood at the depths of despair… or something else?

Set in the Kingdom of Leonid, a land that worships vampires as gods of salvation,
this is a deeply devoted romance that transcends species, between one girl and a vampire who rules the world.