Haku Rei serves as a general in Chu’s military, commanding his own army under Great General Ka Rin. Renowned as the youngest member of the Ten Bows of China, he confidently claims the second position among these elite archers. His career began in the Rin Bu Kun Army, fighting alongside his brother-in-law Rin Bu Kun and close ally Kou Yoku. Bound by a promise to his sister Haku Sui, he devoted his archery to safeguarding Rin Bu Kun until the latter’s demise, an event that left lasting emotional scars. First confronting Shin of the Hi Shin Unit during the Sanyou Aftermath Arc, he clashed briefly before retreating. In the Coalition Invasion Arc, he led Chu’s 1st Army at Kankoku Pass, eliminating Qin’s Commander Rin Bou through precise long-range sniping. His tactical ingenuity emerged during skirmishes with Mou Ten’s Gaku Ka Unit, utilizing elevated platforms to maximize archery range and coordinating assaults with Kou Yoku’s troops. After Rin Bu Kun’s death, he joined Ka Rin’s 2nd Army, persisting in combat despite facing execution threats for perceived failures. Driven by vengeance in later conflicts like the State of Ai and Koku You Campaign Arcs, he targeted Qin for Chu’s defeats. The War of the Three States Arc saw him reinforcing Juuko’s forces against Qin and Wei, aiding Gen’U’s army against Wei generals and attempting—yet failing—to snipe General Tou. Following Chu’s headquarters collapse, he regrouped at Juuko city. A master archer, Haku Rei pierces armor and strikes distant targets with lethal accuracy. He commands specialized archery units and orchestrates combined maneuvers with allied armies. His documented prowess reflects consistent excellence in strength, leadership, and intellect, charting his rise from 1000-man commander to general. Serious, quick-tempered, and duty-bound, he contrasts Kou Yoku’s brashness, prioritizing ally protection and archery supremacy. His pride fuels relentless efforts to ascend the Ten Bows hierarchy. Relationships with Kou Yoku and Ka Rin blend mutual respect with rigid hierarchy, the latter marked by strict compliance under threat of punishment.