Narusena survived a traumatic childhood event in which monsters killed her family. She was rescued during the incident by the healer Raust, an event that became the catalyst for her training as a martial artist.

Her primary motivation grew into finding Raust again to form an adventuring party with him. She eventually tracked him down in the dungeon city of Raust and immediately invited him to form a new party together, revealing her strong-willed and decisive nature. She extended this invitation despite guild officials discouraging her due to Raust's newly acquired reputation as an incompetent healer. She remained steadfast, insisting Raust was the only partner she would accept.

She is an excellent fighter, fully capable of handling herself in combat within the dungeon, a prowess demonstrated shortly after forming the party with Raust. She is also perceptive, becoming confused as to why the entire city treats Raust as useless when his skills are clearly evident to her. A point of personal disappointment is that Raust does not initially recognize or remember her from their past encounter.

Her background and actions directly lead to the formation of a new adventuring party with Raust, providing him with a fresh start after his unjust banishment. Together, they begin a journey to explore the dungeon and pursue greatness.