Yen is the older of two orphaned sons, his brother being named Lori. In a fantasy world-version of the Islamic Golden Age, Lori begins life as a perfectly normal boy who romanticizes thief culture and exploring new lands. Yen wants none of it and intends to stay in town, working as a translator and scribe. Lori eventually succumbs to wanderlust, leaving the city and coming into his own as a trickster thief. Yen sees Lori as his anti-thesis.