Aegina Eine Artwaltz

Aegina Eine Artwaltz is one of the twin valkyries under Gulcasa's command. Both she and her sister Luciana are of eighteen years of age. It is revealed in the Yggdra Union's prequel game, Blaze Union, that she and her twin sister were actually born as the princesses of Fantasinia, but an order to assassinate them came right after they were born. A soldier managed to smuggle them out of the country, after which they were adopted by a noble named Marquis Albelt and raised in seclusion within his city. Aegina was told that she and Luciana were abandoned because of the old superstition that twins were bad luck, and the two of them spent their lives learning to fight so that they could one day kill the father who abandoned them as well as Yggdra, the younger sister who replaced them. She also lost one of her eyes to Elena. Source: yggdra union wiki