Ґілберт Рубі Мартінес

The First Prince of the Marcosias Empire and Edward's older brother. He is gentle, intelligent, and personable.

He suffers from a condition known as Mana Hypersensitivity Syndrome, an ailment that has plagued him for years. Although his symptoms are currently being temporarily suppressed by the Holy Power of His Holiness the Pope, he is unable to step even a single foot outside the Diamond Palace, which is enclosed by a special barrier.