Cassandra's Demons

Four demons get banished from Hell. They are placed under a curse to worship man and the curse is sealed by a book. Cassandra was just a child when she finds a demonic book and gets possessed. A book that has the power to destroy a nation, past great kings used it to conquer till it vanished. Because of the laws of the book and due to the help of a Sorceress, Cassandra possess the demons and controls them by owning their powers.

She becomes the demon while they become immortal humans. Four charming demons must obey her according to the laws of the book. Cassandra starts to get close to one, and feelings arise.

The book paves way for her journey of revenge, royalty and love. She becomes the greatest Queen the kingdom of Tiwan had every beared but would she last long when the rightful heir of the throne comes back? He uses the fastest way to Cassandra's heart, love. Would she be able to break the spell and set these Demons free? or would she be the one needing their help?