Nazarena Teluzian is a woman who serves as both tutor and protector to Staria Reze, the second princess of the Lese Kingdom. Originally a secret agent and skilled assassin for the Sun God Church, she was assigned to care for the princess from childhood because Staria was difficult to control. Nazarena trained Staria in education, manners, and etiquette, handling the princess's tantrums with strict but devoted methods. Over time, her initial mission faded into the background and she developed genuine care for Staria, becoming a trusted figure in the princess's life.

Despite her role as a teacher, Nazarena retains the abilities of an assassin and is capable in combat. She is practical, detail-oriented, and highly responsible, focusing on completing tasks efficiently and adhering to rules and structure. Her strict teaching style reflects her serious demeanor, but it is underpinned by deep loyalty and compassion for those she protects.

In the story, Nazarena remains by Staria's side through the fall of the Winged Bloodline, surviving the chaos and eventually being protected alongside the princess by Crimson. Her role is that of a steadfast guardian who balances her violent past with her nurturing present. Her development shows a shift from a detached operative to someone willing to sacrifice and stay loyal to her charge, even after forgetting the original purpose of her assignment. Notable abilities include assassination techniques, combat training, and practical knowledge of espionage, though her primary function in the narrative is as a caretaker and protector. Her key relationship is with Staria Reze, for whom she acts as a motherly yet firm authority figure.