Ka Rin rises from Great General and second-in-command of the Chu military to become one of Chu's two prime ministers after Shun Shin Kun's death, stabilizing the political landscape within a month. She possesses exceptional height rivaling Kan Mei, a voluptuous figure, short black hair in a pixie cut, and fair skin. Frequently grasping her chest with pride, she proclaims herself the pinnacle of beauty, confident no man could resist her, yet harbors a height complex and threatens death to anyone who comments on it. Her personality blends ruthlessness, unpredictability, and perversity. She executes subordinates deemed incompetent without hesitation, like Lieutenant Ro Kin, whom she killed while deriding him as a fool who reeked of "that baldie." She openly propositions male soldiers, offering sexual favors as rewards for military success and expressing a preference for dominance games. While speaking abusively and condescendingly to those beneath her, she commands fierce loyalty from elite soldiers ranked among Chu's strongest. Ka Rin hails from a family including two younger brothers, Ka En and an unnamed sibling who disappeared during their youth. In her younger years, she reportedly searched battlefields for her missing brother. She joined the Chu military in her late teens or twenties, rising rapidly due to her tactical genius, described by Shun Shin Kun as "a genius at warfare." Commanding Chu's Second Army during the Coalition Invasion, she devised a conservative strategy to wear down Qin's defenses, predicting Kankoku Pass would fall within ten days—a plan endorsed by Ri Boku and implemented coalition-wide. Her primary tactic involved a large-scale diversion using war elephants and personal battlefield appearances to mask the infiltration of 5,000 elite soldiers through a mountain passage. This nearly flanked Qin's defenses until Ou Sen intervened, which Ka Rin attributed to Ordo's failures. In later campaigns, she agrees to a treaty with the State of Ai to divert Qin's resources and deploys General Kou Yoku with 30,000 troops to capture Qin's city of Keifu. During the Juuko conflict, she correctly suspects Qin's intentions, dispatching reinforcements under Haku Rei and Kou Yoku. After Juuko's fall, she analyzes the Qin-Wei alliance and confronts Man'U, threatening elimination if he proves incompetent. Her capabilities include exceptional physical strength, demonstrated by killing Ro Kin with a single kick. Stat assessments consistently rate her strength in the mid-90s, leadership in the low-to-mid 90s, and intelligence in the high 90s. Her tactical style relies on deception, misdirection, and multi-layered strategies, complemented by political acumen that navigates Chu's court dynamics. By the Western Zhao Invasion Arc, she commands 300,000 troops, reflecting her expanded authority.