Unchou Kan'u, a 19-year-old female fighter at Seito Academy, carries the legacy of the historical Guan Yu and the revered title "Goddess of War." She possesses a tall frame, tan skin, and remarkably long dark purple hair reaching her feet, typically tied with bangs covering her left eye, complemented by light blue-grey eyes and measurements of 94-60-91. Her standard attire is Seito Academy's uniform: a revealing white sailor blouse featuring blue stripes and a yellow ribbon, a blue skirt, loose white socks, and brown shoes. Kan'u exhibits unwavering loyalty, primarily directed toward Seito's leader, Gentoku Ryuubi. This devotion manifests in actions like surrendering to enemies to shield Gentoku and showing tolerance for Gentoku's evasions of duty. While initially proud of her combat prowess, confronting her limitations transforms her confidence into vulnerability, driving relentless training to honor her inherited name and role. Her combat abilities are exceptional, marked by the Special A-Rank classification and overwhelming chi energy. She wields the Blue Dragon Crescent Blade, inherited from Guan Yu, alongside the legendary sword Kusanagi. Early overconfidence results in a broken arm during a fight against Shimei Ryomou, yet she emerges victorious and later overpowers Hakufu Sonsaku even in her demonic state. Kan'u's significance intensifies in Dragon Destiny. She becomes pivotal in protecting Gentoku from threats like Kyosho Academy, surrendering herself to ensure Gentoku's safety. She endures imprisonment and interrogation, deliberately restraining her true power before effortlessly breaking free to demonstrate her superiority. Temporarily defecting to Kyosho, she adopts a dark costume symbolizing this shift, but her loyalty to Gentoku remains absolute. She explicitly warns Kyosho's Kakouton she will kill Sousou Moutoku if Gentoku or Seito are harmed. A key development is Kan'u's admission of romantic love for Gentoku to Koukin Shuyu. Accepting advice to distance herself to foster Gentoku's growth as a leader, she later returns at the Battle of Chibi (Red Cliffs) to defend Gentoku and Seito, decisively defeating adversaries like Bunken Gakushin and Chuutatsu Shibai. By the series' conclusion, she remains Gentoku's guardian and close companion, with Gentoku humorously suggesting she read "Romance of the Three Kingdoms." Kan'u's combat portrayal is tempered across media; Dragon Destiny reduces her invincibility to enhance relatability, depicting her as less confident and more emotionally complex. In later seasons, she reconciles her love for Gentoku, though Gentoku appears unaware of these feelings.