Heki, born into a Qin noble family, befriended Shou Taku in their youth. Both entered military service, with Heki becoming a vassal and lieutenant under Shou Bun Kun. His early duties included escorting the young Ei Sei from Zhao to Qin. Heki demonstrates deep loyalty to Ei Sei and Shou Bun Kun, consistently displaying courage even when nervousness surfaces in unexpected situations. He cares profoundly for subordinates and comrades, viewing Shin and Ka Ryo Ten as younger siblings and urging Ten toward safer paths. His personality blends earnestness with visible anxiety, making him susceptible to teasing. After the Sei Kyou Rebellion, Heki confronted his perceived powerlessness, resolving to become a Great General to embody Qin's military strength, mirroring Shou Bun Kun's political ambitions. Heki's command rank rose from 1000-Man to 3000-Man Commander before achieving General. He participated in crucial campaigns: infiltrating the palace during the Sei Kyou Rebellion, where he sustained severe wounds fighting Sa Ji; identifying tactical weaknesses at Dakan Plains and aiding Duke Hyou's escape with cavalry; serving as reliable tactical bait against Kyou En in the Sanyou Campaign, though requiring rescue when overwhelmed; commanding troops under Mou Bu at Kankoku Pass and leading the eastern wall defense at Sai during the Coalition Invasion, integrating Duke Hyou's veterans under Ka Ryo Ten; ambushing and killing the traitor General Ryuu as Commander-in-Chief suppressing the Tonryuu rebellion; and reinforcing Yo Tan Wa at Ryouyou in the Western Zhao Invasion, cooperating with mountain tribes and slaying Quanrong King Rozo alongside Danto despite logistical setbacks and significant losses. His tactical approach emphasizes fundamentals: utilizing terrain, executing formations like the wedge or archer-shield units, and prioritizing troop preservation. Heki maintains morale during crises, though he faces near-death experiences, such as arrow wounds at Bayou and capture during Gian's aftermath before rescue from Hango. His adaptability includes learning the mountain tribes' language to improve coordination. Statistically, his capabilities evolved from initial assessments (Strength 78, Leadership 75, Intelligence 86) to refined military acumen (Strength 82, Leadership 85, Intelligence 87). His competent glaive and swordsmanship enable breakthroughs against elite guards and contribute to key eliminations.