Hailing from Qin nobility, Heki began his military path as a vassal and lieutenant to Shou Bun Kun. He played a vital role in escorting the young Ei Sei to the Qin capital and later participated in crushing the Sei Kyou rebellion. During this perilous mission infiltrating the palace alongside Shin and mountain tribe warriors, he endured grave wounds fighting Sa Ji. Heki steadily climbed the Qin ranks, progressing from a 1000-man commander to general. As a 1000-man commander under Duke Hyou at Dakan Plains, he identified enemy weaknesses and delivered decisive cavalry support against Wei. Later, as a 3000-man commander in the Sanyou campaign, Ou Sen strategically deployed him as bait after Heki demonstrated tactical acumen by exploiting terrain against Kyou En. His leadership continued during the Coalition Invasion, commanding troops under Mou Bu at Kankoku Pass and bolstering morale against Chu's vast numbers. He also co-commanded the defense of Sai's eastern wall, effectively utilizing Duke Hyou's veterans. Achieving general rank after the Coalition War, Heki was appointed Commander-in-Chief of the Subjugation Force to quell the Tonryuu rebellion. He successfully defeated the rebels and killed their leader, General Ryuu, by predicting enemy movements and orchestrating an ambush. His subsequent campaigns included reinforcing the Yo Tan Wa Army during the Battle of Ryouyou in the Western Zhao Invasion. Despite suffering devastating losses and supply destruction, he spearheaded a critical assault on the Quanrong. In a pivotal moment, he collaborated with the mountain tribe warrior Danto to slay the Quanrong king Rozo. Heki continued frontline service in later Zhao campaigns, including the sieges of Gian and Atsuyo, where he coordinated closely with mountain tribe allies and learned their language. Heki employs fundamental tactical proficiency and conventional military strategies. His capabilities include effectively utilizing formations like the Wedge Formation for cavalry charges and integrated archer-shield units for defense. While not possessing exceptional martial prowess, he demonstrates competent glaive and swordsmanship, wounding Sa Ji and contributing to Rozo's defeat. Historical assessments consistently rate his leadership and intelligence in the mid-80s, with strength ranging from the high 70s to low 80s. Personally, Heki exhibits unwavering loyalty to Ei Sei and Shou Bun Kun. He maintains a serious and caring demeanor toward subordinates and comrades like Shin and Ten, viewing them as younger siblings. Though he experiences visible anxiety in high-stress situations, he displays courage in critical moments. He harbors deep admiration for Yo Tan Wa, developing feelings upon their first meeting. Historically, the character's survival stems from a misinterpretation of the Shiji text, where the term "Heki" (wall) was erroneously interpreted as a person's name related to a noble's death, allowing him to persist beyond initial narrative plans. Captured after the Zhao campaign's Gian siege, Heki endured enslavement in Hango before being rescued. His current status involves ongoing military engagements on Qin's frontlines.