Reinhard von Lohengramm, voiced by Ryô Horikawa, is one of two main protagonists in the series. Reinhard was born into a poor noble family. He lived with his father and his older sister Annerose. His mother had died when he was young so he knows very little about her. When Reinhard moved to a middle class suburban neighborhood, he met Siegfried Kircheis and they soon became inseparable friends. When his father sold Annerose to become Kaiser Friedrich IV's concubine, Reinhard swore that he would overthrow the Goldenbaum dynasty to rescue his older sister. He left school to join the military academy and persuaded Kircheis to come along with him. Reinhard died of a never-discovered congenital disease at the young age of 25, shortly after his accession to the throne. The doctors could not find a precedent for the disease and named it "The Emperor's Sickness".

Source: Wikipedia