Erufina, princess of the kingdom of Fiel, lived a life defined by luxury and privilege within the royal court. Her planned marriage to Prince Kwan shattered when the Valdland army, commanded by Prince Viceard Balbacil, attacked and conquered her homeland. In the invasion's aftermath, Erufina and Fiel's other women faced forced sexual subjugation under their captors.

Renowned for her beauty, Erufina became Prince Viceard's specific target; he intended to keep her as a sex slave. This placed her in severe moral conflict, as resistance, escape, or suicide would only increase the suffering of her former subjects, leaving her few viable choices.

Following the arrival of his step-mother Marna, who revealed a plot against him by his father, Erufina observed unexpected shifts in her captor Prince Viceard's behavior, revealing a less harsh aspect of his character. Despite this, her circumstances remained captivity and subjugation. The arrival of the Valdland king and the escape of the injured Prince Kwan further complicated her situation within the occupied kingdom.

Physically distinguished by blonde hair and blue eyes, Erufina's narrative arc involved navigating extreme degradation while clinging to her former royal status, generating profound internal tension throughout her experiences.