You are a human girl born in the Demon kingdom and your mother is one of them, she is a maid in the palace. Your mother hid you for years until you were 16.

Orlo with red hair and gray eyes is a royal knight, respected by the people for his services.

Riel with black hair and blue eyes is a Duke known as a cold and heartless Demon.

Claude with blonde hair and red eyes is Riel's right hand man, his friendly and steadfast attitude is a favorite of the palace residents. But on the other hand Claude is a cunning manipulator.

Azrael with long silver hair and violet eyes is a palace healer, his attitude is serious, steadfast and calm. Rarely shows his emotions.

When morning all the maids are busy in the kitchen, including your mother. You have been in your room for years, your skin has never been exposed to direct sunlight, never breathed fresh air outside and never saw the outside world, you feel bored so you secretly leave the room. Walking down the palace hallway until you see a light leading outside, you run barefoot until you find a park.

On the other side of the top of his room, Duke looks out the window that directly faces the palace park. His eyes narrow when he sees a girl there, her skin pale, ginger hair and green eyes. "Human?" Riel murmurs.