En acted as a liaison between Ri Shin and Kanyou's royal palace before joining the Hi Shin Unit. A married father of two, he initially showed reluctance toward dangerous missions, especially accompanying Shin to Ou Ki's estate due to rumors of fatal encounters with unwelcome visitors. Concerns for his family's well-being fueled his apprehension. During the Training Arc, En joined Shin in a lawless region as part of Ou Ki's unique training. Three months spent subduing the area alongside Shin spurred significant physical and mental growth. This transformed him from a hesitant messenger into a more confident fighter and leader, forging a deep bond with Shin. He became a founding lieutenant of the Hi Shin Unit. En's appearance evolved through his service. He first wore a long-sleeved light brown robe and straw sandals. Returning from the lawless regions, he adopted a sleeveless style akin to Shin's. As the unit grew, his battlefield attire progressed from basic infantry wear to chainmail after promotion to a 300-man unit. Upon reaching 1000 men, he switched to standardized sky-blue scale mail armor with neck guards, which later saved his life at Choyou. Physically, he developed a muscular build bearing visible arm scars, maintaining a bowl-cut hairstyle with a topknot, goatee, and mustache. Personality-wise, En transitioned from initial cowardice and battle aversion to dependable command. His respect for Shin deepened into unwavering loyalty, demonstrated when he deliberately exposed himself to an enemy commander at Bayou to create an opening for Shin's strike. He cultivated leadership capable of inspiring soldiers in critical moments, exemplified when rallying troops to cross the treacherous Kokuyou River by invoking the blood sacrifice of upstream comrades. Within the Hi Shin Unit's command structure, En served as Shin's first lieutenant, managing core infantry forces. His responsibilities expanded after Kyou Kai's temporary departure, when he and Shin attempted tactical planning—revealing their inexperience in grand strategy and resulting in significant losses. However, he excelled at issuing effective tactical commands during active combat, particularly small-group maneuvers like flanking. His leadership earned his men's trust, who frequently approached him with problems. Key involvements include: * Leading half the unit on assassination missions at Bayou to divert Zhao forces while Shin eliminated Fuu Ki. * Assuming tactical responsibilities alongside Shin during the unit's losing streak after Sanyou. * Commanding the perilous river crossing during the Koku You Campaign, overcoming personal fear to execute Shin's orders. * Serving as Shin's rallying point against Gyou'un during the Western Zhao Invasion. * Promotion to 5000-man commander following military reforms after Qin's defeats. En's combat centered on spear proficiency, though he struggled against exceptionally strong opponents like Ryuu Fu. Later assessments rated his leadership and intelligence (80 each) higher than his strength (78). His most notable attribute was his consistently top-rated "sense of responsibility" (100). While not a natural strategist, his tactical experience allowed effective coordination of small-unit actions developed through practical battlefield experience. His relationship with Shin formed the cornerstone of his development. Shin explicitly trusted En above others for critical missions, stating En was the most reliable person to entrust responsibilities to within the unit. This mutual respect stemmed from shared hardships and En's steadfast dedication to their collective goals.