Casta ascended to the throne after her father's death and a short regency by her mother, in 74 TC. She immediately launched a crusade against the Empire of Murmanityed. The war was harrowing and dangerous, but Casta survived and prevailed over the Imperial Legions at the Battle of Deregod. Here Casta's crusaders destroyed the Imperial army and marched on to Murdamiya, which they razed to the ground.
After the war, Casta returned home to Aruthien as the golden Queen. Blonde, young, beautiful, and victorious, Casta held a special place in the hearts of her subjects. Casta presided over the Golden Age of Aruthien.
She married Phillipi of Aligindel after the war, uniting Aruthien and Aligindel through marriage, though it was clear that the throne of the Kingdom and the Empire would not be merged. Together, she and her husband claimed all of Bravenland between their two realms, an audacious claim that a century later is still being implemented.
She now lives in Aligindel with her husband, but travels frequently to visit the widespread members of her family.