Tialis, also called Tiaris, possesses blue eyes and long orange or yellow hair extending to her hips. She presents as an adult female without animal traits. Identified as the daughter of Queen Helene and sister to Yurisha, she belongs to the royal family of Carnea during wartime. After the death of Carnea's king and the decline of its military, a former knight named Claude devised a plan to fund mercenaries. This strategy required Queen Helene and her daughters, including Tialis, to provide intimate services for financial support. Consequently, Tialis and her relatives agreed to Claude's terms and received specialized training to perform this role.