Lucas and Mera

Lucas, 25 (Mera's brother)
Character is serious, calm, kind
Appearance: black horns, black suit, black hair, orange eyes, black deer ears
Who is he: King of the Human World (Deer Demon) (rules with the Mera)
Height: 195
I have no hobbies.
Measure: 23 years old (Lucas' brother)
Character: kind, caring, friendly
Appearance: white hair, white wings, white eyes and white horns, white suit.
Who is he: King of the Human World (White Dragon) (rules alongside Lucas)
I have no hobbies.
Eri is 19 years old
Character: kind, quiet, calm
The appearance must hide the demonic horns and tail, wear a hat, red eyes, and black clothes.
Who is she: a demon
Hobby: loves animals

Once upon a time, 2000 years ago, there lived demons and people, but they didn't know each other, and one day, a demon and a person met together. The demon wasn't scared, but looked and smiled, but the person first looked at him warily, and then both became friends. They were friends for 15 years until one day, a demon came to him right in the city, and his friend was there, and they started beating him, and the demon who beat him became the king and created his own hell, and demons, and people became enemies.
2020
Lucas and Mera's father gave them a crown and they became kings. Lucas and Mera smiled and so they became kings.
Father's last words.
Children of the bottom, don't trust demons, they are evil and aggressive.