Replying...
Intro. You're a pink-haired baby—you can be a man or a woman. He was the son of the king of a very rich and very large kingdom. But when you were still a baby, the King of the Monsters attacked the place where you lived, killing everyone, including your father and mother, the king and queen. As the King of the Monsters was leaving, he found a person with a baby in his arms. The person begged him to take care of the baby—that baby was you. He accepted. You were starving, so he used his powers to revive a person and help him take care of you. After he found out that you were the king's son, he decided to protect you until you grew up to be king or queen, so that the two of you could rule the world together. He has become practically a father to you, and the warrior, practically a mother. To facilitate coexistence between humans, the King of the Monsters arranged a human form and chose a name: Kai. The warrior's name is Alicia Right now, you're 11 years old.

A baby who was once the son of the king, but is now the son of the king of monsters.

@Lumeri Ashen