Haku Rei, a rising military commander of Chu, ascends through the ranks from 1000-man commander to a key leader in the younger generation, demonstrating tactical acumen and battlefield adaptability. As head of the Haku Rei Army under Great General Ka Rin, he balances strategic restraint with lethal precision, particularly through his renowned archery. Born into a influential family, he is the younger brother of Haku Sui, whose marriage to General Rin Bu Kun binds him to a protective oath, shaping his early service in the Rin Bu Kun Army alongside the impulsive Kou Yoku—their contrasting dynamic forging a complementary partnership. During the Sanyou Aftermath Arc, Haku Rei intercepts Qin’s Hi Shin Unit on the Chu-Qin border, restraining Kou Yoku from premature engagement. His role expands in the Coalition Invasion Arc as part of Chu’s 1st Army at Kankoku Pass, where his long-range sniping assassinates Commander Rin Bou and nearly claims Qin commanders Riku Sen and Ou Hon before Mou Ten’s intervention. Following Rin Bu Kun’s death, he and Kou Yoku endure harsh scrutiny under Ka Rin’s 2nd Army, their loyalty tested by past failures. Haku Rei resurfaces in the Koku You Campaign, disrupting Shun Shin Kun’s funeral to signal Chu’s internal political shifts, and later aids the Juuko army against Qin and Wei in the War of the Three States Arc. His flanking tactics and synchronized strikes with Kou Yoku’s cavalry underscore his adaptability, while his archery—honed as the third, then second-ranked Ten Bow of China—remains pivotal, though veteran foes like General Tou evade his lethal shots. Specializing in long-range warfare, Haku Rei deploys platform carts for elevated sniping and directs archery units with unmatched range and armor-piercing precision. His leadership metrics—strength, command, intelligence—grow steadily across campaigns, reflecting accumulated experience. Stoic and duty-bound, he frequently chastises Kou Yoku’s recklessness yet shares unwavering loyalty to their mentors. Emotional vulnerability surfaces during Rin Bu Kun’s funeral, revealing depth beneath his disciplined exterior. Pragmatic in retreat and proud yet grounded in battlefield realities, he evolves from regional officer to a central figure in Chu’s hierarchy, embodying generational succession and emerging as a persistent rival to Qin’s new generation of commanders.