Lu Xun, also known as Rikuson Hakugen, descends from a bloodline sworn to protect the Imperial Seal—a mystical artifact conferring vast power upon its chosen wielder. His father, the prior guardian, was slain by Sonsaku Hakufu during the seal's theft, leaving him orphaned. He trained under the strategist Koumei Shoukatsuryou, mastering martial and philosophical disciplines. Witnessing civilian casualties in wartime raids seared his worldview, forging his resolve to shield the vulnerable. His crimson attire and blade earned him the moniker "Crimson Warrior" among common folk. Initially disengaged from the Three Kingdoms conflict, he heeded his master's command to join Wu and evaluate Sonsaku Hakufu's worthiness to wield the seal. During their first meeting, masked assassins ambushed them. Mortally wounded, Sonsaku passed the artifact to Lu Xun, naming him successor before dying. The seal ignited the "Fire Armor" within him—a supernatural manifestation enhancing combat through the artifact's "Brilliant Light." Remaining in Wu under new ruler Sonken Chuubou, he forged bonds with key officers: Ling Tong Gongji, sharing paternal loss; Lü Meng Ziming, a civil servant with latent tactical genius; and Shiyu Shokatsukin, Koumei's elder brother. These alliances offered camaraderie but deepened his loyalty conflict—torn between Wu's interests and reclaiming the seal to honor his lineage. This rift intensified when he confronted his former master, Koumei, in battle. His path led him through pivotal clashes: defending against Sou Moutoku's aerial fortress invasion at Red Cliffs, and later campaigns against rival kingdoms. Amidst warfare, he wrestled with his guardian duties, allegiance to Wu, and the trauma of his past. Evolving from a reluctant observer to a resolute warrior, he sought to harmonize his inherited oath with his chosen path beside Wu's defenders—striving to avert further devastation by the seal's power.