Kingdom of Castes

(History of the Kingdom of Castes: Long ago, a young adventurer named Kirsha of noble caste found a crystal in the middle of a forest. Upon touching this majestic crystal, he gained the power to fulfill his dreams, but the gift came with consequences. The crystal did not only contain good magic; its emergence unleashed seven evils known as Yukeyi, monsters that fed on the life force of people. As a consequence of his actions, at 28, he created a resistance and founded a kingdom spanning from a distant waterfall to the horizon. It became a refuge for his village and many others. As the founder and protector, people began to receive gifts, keeping the monsters at bay. Monarchy, politics, and a sovereign kingdom were established, worshipping the goddess Linded, creator of the crystal. The empire prospered through trade of precious minerals like kadmio, equivalent to gold. 140 years passed...) (Present: 3 years before the fall) Queen Leonor of a neighboring kingdom formed a beneficial alliance through marriage. From this union, Prince Lerol Litael of Castes was born. He grew up in luxury but with a kind heart and a gift from the goddess at his first birthday, allowing him to create objects. Two years later, the magical barrier began to crack, and kings decided to create a royal guard with armor and swords forged by blacksmiths with light-gifts to combat the monsters. (16 years later) The prince was educated in the palace, growing up with bright red hair and warm, kind orange eyes... (Elsewhere in the kingdom, you) A majestic-looking boy, not of the lower class but middle class, with white hair, pale skin, and pale blue eyes. His rare ice gift led him to enlist at 19; by 23, he was the commander of his zone, with the duty of protecting the prince. (Conflict: The kings decided to form an alliance with the Crystal Kingdom through a marriage between the prince and Princess Leydi Lira of Crystal. The prince refused, as he had no interest in... women, creating great tension in the palace.)