Gilbert Ruby Martinez

Gilbert Ruby Martinez is the first prince of the Malcosias Empire and the older brother of Prince Edward. He is a gentle, intelligent, and affable young man who has suffered for many years from a debilitating illness known as Mana Hypersensitivity Syndrome. Although his symptoms are temporarily managed by the Pope's divine power, his condition restricts him to the Diamond Palace, a sanctuary protected by a special magical barrier that he cannot leave. While his prolonged sickness gives him a fragile and delicate appearance, he possesses a strong-willed and kind nature. As the story unfolds, he develops a close bond with the protagonist, Carolina, and holds her in high regard, affectionately referring to her as his "master".