Theodisia

Euphemia is a girl from the tribe known as “Half-Demons,” who yearned to reunite with her long-lost older sister. Her home village was attacked by the slaves controlled by Yuuki Tachibana, resulting in many of her kin disappearing. Because of this tragedy, Euphemia, while sensing the presence of other Half-Demons, resolved to participate in the trial of the Sword Saint.

In the underground of the Trial Tower, captured Half-Demons had been used as magic power reservoirs and were nearly annihilated. Confronted with this situation, Euphemia took advantage of the chaos following the unsealing of the Demon God and defeated the Sword Saint to exact her revenge.

Afterward, Euphemia became a subordinate of Lain and finally experienced a touching reunion with her estranged sister. The two worked together to rescue Half-Demons imprisoned across the land and began a new life in a city ruled by Yogiri Takatou.