In Nobunaga Concerto, Nōhime, also known as Kichō, is the daughter of Saitō Dōsan, the formidable warlord of Mino Province, and the lawful wife of Oda Nobunaga. Because the man she marries is actually Saburou, a modern high school student who traveled back in time and was asked to live as the sickly real Nobunaga, her importance in the story grows largely from the way she relates to a husband who is not what he appears to be.

Her background follows the broad outline of the historical Nōhime. She is given to the Oda family through a political marriage intended to seal an alliance between the Saitō and Oda houses, uniting Mino and Owari through her hand. As the daughter of Dōsan, a ruler whose cunning earned him the reputation of a viper, she has grown up inside the calculating world of warlord politics and understands that her marriage is a matter of state rather than personal choice. This upbringing makes her cautious. When she first meets her new husband, she is skeptical of him and keeps a watchful distance, unsure whether the man now leading the Oda clan deserves her trust or her loyalty.

Her personality is defined by composure, sharp perception, and quiet inner strength. She does not give her confidence easily, but her reserve comes from living in a world where loyalties shift and betrayal is common rather than from coldness. Over time, her skepticism softens. As she watches Saburou deal with the people around him in his unconventional and sincere way, she comes to regard him with genuine warmth. The formal arrangement she entered as a political bride gradually becomes a real husband-and-wife relationship, and she grows into one of his most trusted allies and confidantes. In this role, she acts as an understanding partner and a steady source of emotional support for a man who is often surrounded by scheming retainers and rival warlords.

Within the story, she serves as a grounding presence. While the men around Saburou test his authority, question his decisions, and pursue their own ambitions, Kichō accepts him not because of his title but because of the person he proves himself to be. Her loyalty also ties Saburou to Mino and to the complicated legacy of her father, whose ambitions and eventual downfall are central to the conflicts involving the Oda clan. She therefore stands at a quiet but important crossroads between the two houses, giving her a natural place at the heart of the political drama.

Her key relationships shape much of her character. With her father, Saitō Dōsan, she is connected by blood and by the political world he created; his decision to marry her into the Oda family determines the direction of her life, and his fearsome reputation follows her wherever she goes. With Saburou, she moves from wary bride to trusted confidante and finally to devoted partner, and her faith in him becomes one of the few deeply personal attachments he can rely on amid the pressures of leadership.

Her development mirrors the transformation of her marriage. She begins the story as a political pawn who keeps her distance and judges her husband with caution. Through her growing respect for Saburou's character, she comes to choose her loyalty freely rather than simply inherit it, and she commits herself to standing beside him through the hardships of governing in the Sengoku era. Her arc is not one of dramatic action but of gradual emotional opening, as the guarded daughter of a feared ruler becomes a sincere and dependable partner.

Notably, the series does not present her as a warrior, unlike some other fictional portrayals of the historical figure. Her notable abilities lie in her perceptiveness, her emotional steadiness, and her skill at reading the people around her. In a narrative filled with ambition, deception, and shifting alliances, her judgment and constancy are the qualities that define her, making her a durable source of support for Saburou as he tries to hold his domain together and move toward unifying the country.