Kaine, a 5000-man commander in Zhao’s military and among Ri Boku’s most trusted vassals, hails from Ganmon in northern Zhao. Orphaned during childhood Xiongnu raids that claimed her parents, she grew disillusioned with incompetent military leadership, fueling a vengeful drive that initially clashed with Ri Boku’s cautious strategies against the Xiongnu. Witnessing the catastrophic fall of Gan Mon Castle and the bloodshed of reckless campaigns, she gradually accepted the prudence of his methods. A master of mountain horsemanship and dual-wield combat, she rose as a cavalry leader, her loyalty to Ri Boku rooted in shared trauma and respect for his intellect. This bond deepened into unspoken romantic yearning, envisioning a future with him in Ganmon’s tranquility. Serving as his bodyguard and tactical subordinate, she fought pivotal battles like Bayou, where she forged a wary camaraderie with enemy tactician Ka Ryo Ten. Their clashes on opposing fronts consistently ended in stalemates, each refusing to strike the fatal blow—a testament to Kaine’s reluctant respect for formidable foes. In the Coalition Invasion, she spearheaded covert cavalry raids into Qin, striking cities like Rou and Sai. At Sai’s siege, her resolve wavered when confronting Ten, opting to capture her as leverage rather than kill. Shin’s intervention thwarted the gambit, exposing Kaine’s tactical pragmatism and aversion to harming those she esteemed. Exiled with Ri Boku near Zhao’s border with Wei after the Coalition War’s collapse, she shielded him through political purges and assassination plots. Severely wounded defending him during the Zhao Crisis, she pressed onward, safeguarding both him and Prince Ka through ambushes and betrayals. By the Battle of Hika, her focus narrowed to Ri Boku’s survival, deploying mounted archers and frontline defenses against insurmountable odds. Private exchanges with him hinted at mutual desires to abandon war for Ganmon’s peace—a dream sustaining her through relentless conflict. Beyond Ri Boku, her dynamic with the brash Fu Tei oscillated between friction and forced camaraderie, often quelling his impulsiveness with physical reprimands. These interactions, alongside her lethal efficiency and moments of humanity, painted a portrait shaped by loss, loyalty, and the fragile hope of a life beyond battlefields.