Qing She

Kei Sha, also known the Silent Hunter, is an Instinctual Type General of the Zhao Military and Ri Boku's right-hand having once been his former student. During king Tou Jou's reign, he was considered one of the most important military commanders of the Zhao Military as he was regarded as the closet man to the final seat of the Three Great Heavens. (Source: Kingdom Wiki)