Selge Constance, Earl of Regalia and head of the Constance family, rules his territory amidst a network of influential kin. His older brother is Villar Constance, Lord of Altirk, whose influence aligns the family with factions like the Fantasia Union. Selge also has a younger brother named Igor Constance, and his cousin is the prominent political figure Marrine Kreische.

Bearing grey hair and blue eyes, Selge is a Lord possessing a Crest that grants supernatural abilities and dominion over Regalia. Lords are expected to combat Chaos and protect their lands, though political maneuvering often takes priority. Selge is specifically known by the epithet "the Fleeing Lord," indicating a reputation for avoiding direct military confrontation – a strategic preference contrasting with typical expectations of Lordly battlefield prowess.

He operates within the continent's power dynamics and the Lords' Code governing noble and mage interactions, though adherence varies. Crests, vital to authority, can be seized through combat, inheritance, or political transfer, placing Selge within a constant struggle for power consolidation. His role involves managing Regalia during the continent's instability following events like the Great Hall Tragedy.