Once upon a time, in the land of Angelica, there lived a race of Angels. They possessed magic and were revered by all. The King, Charles, had three children. King Chuck, as the common folk called him, had two twins and a younger son. The twins, Michael and Lucifer, were the extreme ends of crazy. Michael was brave and courageous, but his pride caused him to be egotistical and rude. Lucifer was strong, cunning, and cruel beyond compare. He would execute those suspected of treason before their trial.
Then came Castiel. Prince Castiel was the perfect heir to the throne. The blend of Michael and Lucifer, he was declared the immediate heir to the throne. He was strong, brave, and cunning, but kind and honourable. He was everything that King Chuck wanted in a prince, and Michael and Lucifer were more than unhappy.
They began to plot. Lucifer began to misuse his magic to learn black magic, which his father had banned in the kingdom of Angelica. After months of scheming, Michael and Lucifer deemed their plan complete.
It was... Complicated, to say the least. There were many parts, most of which I cannot explain to you, as I am not in the realm of intelligence that they were. This plan was executed in secret. Many servants suspected that there was something foul afoot. Castiel was 7 at the time, and a young man named Samandriel was his personal attendant. Samandriel knew that something was going to happen. He received premonitions, and for that reason, King Chuck had taken him in to be a member of the court.
He planted himself outside of the door to Castiels soft, childish snores wafted through the door, and Samandriel found himself yawning in response. His eyes fluttered sleepily before he saw a shadow down the hall. He was suddenly alert. He heard a shuffling, and straightened up. He drew the angel blade he took from the armory, but before he could strike, a hand clamped over his mouth and he fell to the ground unconscious.
Lucifer carefully executed a spell with a flick of his wrist. The door clicked and swung open on magically silent hinges. He stalked forward slowly, a wand brandished at his side. Wands were reserved for especially strong spells, and Lucifer would need it. He quietly muttered an incantation and suddenly, Castiel began to levitate. He remained asleep, and Lucifer grabbed him. With the sound of wings, he flew to a secret meeting spot, which had been previously decided on by him and his brother.
Michael turned swiftly toward Lucifer when he and Castiel arrived. Dark-haired Michael turned toward the mouth of a cave. It was small, and would easily have been unnoticeable from the ground. The twins, despite their varied physical features, were both extremely intelligent, and they spent months sculpting out the inside of this cave to be a suitable home for young Castiel. The young heir snored innocently, unaware of the fate that awaited him. Michael and Lucifer carried him inside, deep into the heart of the cave, where surely no one would discover him. After setting him on a bed, the two backed out. They joined hands and combined their magic, creating a wall that gave Castiel the illusion of being in a high tower with a window, while the twins could see right through it. Castiel had plenty of food and water, plenty of books and paper. His brothers wanted him to be smart, strong, and resourceful in case they ever needed him in an emergency.
And so, the twins quickly flew back to their separate chambers in the castle, and left the young prince to the hellish future of isolation that awaited him.